Park Room and Library

To be fair we are not tea people. We were staying at the hotel and did not have the energy to leave for dinner. We also were not feeling up to the steakhouse so within the hotel this seemed like the best match. The décor is interesting, quite classical. It is clearly set up for tea or drinks first as you would expect. The staff was friendly and helpful throughout our dining experience.
For my meal I chose the Park Room Burger. It comes topped with Aberdeen Angus Beef, bacon and cheddar cheese. The burger is good sized. It will fill you up especially since it comes with fries. The flavor was ok for a burger joint. It tasted like a standard hotel burger. Given this location and the cost it should have been significantly better. The fries were ok.
I would not recommend this place for dinner. That being said, that is not the point of it anyway. Given the reviews it is clearly good for tea.

My very first afternoon tea experience in London was right here as we were staying in the hotel. While I’m not a fan of tea, I went along because my spouse wanted to, and champagne (my fave) was also included. Yay!
ATMOSPHERE:
The décor reminds me of a Ritz Carlton dining room — classy, soft colors, nice silverware and place settings. We had a nice window table that overlooked the sidewalk & city street and was great for people-​watching. The room wasn’t crowded at all so it was a very relaxing, quiet setting.
AFTERNOON TEA:
While I didn’t partake in the tea, I loved the champagne that it came with! It only came with 2 glasses so we ordered more. A tiered plate setting of never-​ending sandwiches, different pastries, and fruit cup for dessert completed the experience. Everything was fresh and neatly prepared.
SERVICE:
Our male server was very friendly and professional.
OVERALL:
Good food, nice setting, great service. Highly recommended.

Anna’s afternoon tea with champagne. Recommend.
Traditional afternoon tea.
Lots of sandwiches, cakes etc. Really nice though I would say that the pastries weren’t two of each so you had to share. That’s fine but how do you share a lemon posset?! Still it was very good.
There was too much food so we got our cake to go. As did every other table we saw!
Service was great and the ambience was classy without being pretentious. You can wear jeans and not feel like a tit.
Good traditional afternoon tea. Recommend it!

When it comes to afternoon tea time, it is not only about the quality of food of drinks, it is also about the crowed, the atmosphere, the seating, the lighting, it is about the whole experience. Examples of places without the complete ingredients are a lot in London.
I wouldn’t claim that this is the best, but it is one of the good ones.
Book in advance, especially in holidays season.

Great ambiance and afternoon tea. The service, however, was not at at the level In used to, especially at a JW Marriott. The service alone is the difference between this being a 3 star instead of a 5 star review.

I came here for afternoon tea last fall, and had one of the most memorable dining experiences of my life! I saw a promotion for their Downton Abbey tea online: the first person to make a reservation on a few specific days got the Downton tea for 2 for just £2.25 a person! Seeing as the regular tea costs £34.50, it was more than a steal, and I couldn’t believe my luck when I was the first caller.
We were seated in in comfy chairs overlooking Hyde Park, with live piano music in the background. The friendly server helped us pick our teas and kept coming back to check if we needed more hot water. The food and drinks were preceded by an amuse bouche of mango and passionfruit salad, wonderfully sweet and light. Then came the 3-​tiered tray… traditional tea sandwiches; warm scones and buns wrapped in a cloth napkin, accompanied by clotted cream, honey, lemon curd, and strawberry jam; a plate of desserts including bread pudding, Victoria sponge, Napoleon pie, lemon posset, and an éclair. The sandwiches and scones/​buns were freshly made and UNLIMITED. All this for £4.50 total! (Though I would come back for a big big splurge and pay the regular price).
The white-​gloved staff didn’t treat us any less courteously even though we were there for the discount tea. We sat for 2.5 hrs and never felt rushed. It still feels like I dreamed it.

Cosy traditional atmosphere, stupendous afternoon tea, bitchy service.

From my first experience just sitting to a cup of tea before check-​in while business meetings took place around me, to an afternoon tea with my parents, the Park Room and Library met and exceeded our expectations.
The staff is incredibly hospitable and quick, while allowing guests the leisure of enjoying their tea or other beverage, in a lovely room setting and with the great view of busy Park Lane, and Hyde Park.
Excellent tea service, even under very busy conditions – we never felt rushed.
The Anna’s Tea was amazing: great selection of varied finger sandwiches (the prawns and mayo were my favorite along with the smoked salmon), the fresh-​baked plain or dried fruit scones, and the delectable cakes at the top tier. Everything was impeccable.
The Victoria Cakes are unbelievably light and flavorful. I fell in love with their light green monogrammed china pattern.

FOOD DRINK:
High tea :} finger sandwiches, scones with sweet jam n honey, pastries.
SERVICE:
good
ATMOSPHERE:
Very nice, hoity toity window seat to watch passing flow of the road in front of Hyde Park on a rainy day :)

Went for afternoon tea, and the pastries, scones and sandwiches were top notch. The tea selection could’ve been a bit better (most had a 6 or 7 quid supplemental charge, a bit surprising when you’re already paying quite a bit for the overall package). The décor and piano entertainment were lovely. All in all, a very enjoyable afternoon tea experience.

Great afternoon tea. Reservation is recommended.

We’ve had the pleasure of having afternoon teas in different parts of the world: twice in Hong Kong [The Penisula Hotel and Landmark Café — both very high end type of afternoon teas] and once in Ireland. The Park Room and Library at the Grosvenor House stands right up there at the top.
The teas are exceptional. Piping hot with milk and sugar. There is no other way to enjoy English teas. The scones were out of this world. You get two different types [butter and a fruit one]. The sandwiches were very well made and had great simplicity to them — cucumber, egg, salmon, chicken — they were all amazing. And the best part, you can have seconds. Maybe even thirds. We requested more sandwiches and they were more than willing to throw in more scones, but we were just too full.
Atmosphere was great and it was a way to get out of the hustle and bustle of the London sightseeing. To have high tea by the window and look at Hyde Park. Nothing is better.

i haven’t been here in over a year, but i have to say that i’m a big fan. truthfully, this lovely little establishment deserves a 5 in it’s class of 4 michelin stars… allow me ‘esplain:
service (5): impeccable. i love a hotel where the staff remembers you and your name each time you walk in the door … whether it was 3 hours ago as you were leaving for dinner, 3 days ago for an emergency visit, or 3 months ago for a quarterly meeting.
meals/​room service (4): in the exception for afternoon tea, well… it is london… however, i may be spoiled by the food in nyc, singapore, and paris, though, so this vote may be biased. needless to say, i love tea… and they do it so well. quel surprise. the minor lack of quality in room service food/​menu was made up for in those who served it in spades.
room appointments (4): good size for london even though the appointments were on the conservative, business side.

A retreat from the hustle of crowded London. The room is spacious and grand with the tables set far apart from each other so it feels very private and comfortable. The pianist in the background added to the peaceful setting.
Why missing one star? It was the sandwiches, next time I’m going to skip them because they are just not very interesting. For 30 pounds, I just expect more from the sandwiches. Next time just give me the warm scones with clotted cream, honey, and jam. Yum!

My first time having high tea, and it instantly became my favorite thing to do in London. I am jealous that there are not places like this in the States.
I didn’t pay (thanks John: D) but I DID enjoy the tea and food to the full extent. The little finger sandwiches were all great; Prawn sandwiches are one of my new favorite foods. We only ordered 2 kinds of tea but both were delicious and smooth — I’m sure ALL of them are great. You also get some pastries and scones and fruit preserves with honey. So so so good.
The atmosphere is amazing too; in the afternoon the sun shines through the window and casts silhouettes of patrons against the floor; it’s something you can’t replicate anywhere else. This is true London.

Every trip to London must include afternoon tea and the Park Room at the Grosvenor J W Marriott in Mayfair (on Park Lane) is a wonderful place to have high tea, scones and petite sandwiches. They have a prix fixe tea that allows you to sample multiple types of tea, delicious sandwiches and fresh scones with fresh honey and preserves.
On top of the fantastic tea and food, the setting is out of a movie. The grand room (with a Grand Piano) overlooks Hyde Park behind an expansive set of curved windows. I love to sit next to the window and gaze out at the park and people watch. Even though the front of the restaurant is glass, it is almost completely soundproof from the cars zooming by on Park Lane.