Obviously these apartments are in Mayfair, so they are expensive. You are paying for the location. It was nice to have an apartment, which gives you a bit more space. We had a two bedroom apartment. The L'Occitane toiletries in the bathroom were a very nice touch. Our main bathroom was small but clean and everything operated efficiently. There is a shower within the bath tub. In the second bedroom, there was a very small shower only, which did not have great hot water coming through. It is roughly a 7 minute walk to Green Park Tube, or a minute or two longer to Bond Street tube/Oxford Street. We walked to our Theatre in Picadilly in 15 minutes. The furnishings and TVs appear a bit dated. The king size bed in our bedroom was extremely comfortable but the air conditioning unit appeared to struggle to cope. We stayed here in September and the room was quite warm, so I wouldn't like to see how the air conditioning dealt with summer. I was not able to utilise the free internet service to check my flight times because it crashed everytime I tried to get into the Singapore Airlines site. It was extremely slow and I gave up using it. The female staff member who greeted us on arrival was friendly, as was Alex and the other male staff members. My husband experienced an unfriendly attitude from a female staff member. Whilst things feel a bit dated, I felt quite comfortable here.

I wanted to give this hotel a 4 and a half star rating in this review, but since i can't do that on this website, i decided it was leaning more toward a 5 star rating.
Postive Things:
-The staff were excellent-- warm, friendly, and always cheery, i would like to give a big thank you to Marguerita and Franscesca.
-3 minute walk away from some nice breakfast eateries.
-More than anything, this hotel is really like a home away from home. Although we often stay at other hotel brands such as Ritz Carlton, Four Seasons, Hyatt, etc. we decided to stay here due the scandalous price of hotel rooms and suites in London and also the tiny size of the rooms even after paying such a high price. And i have to say that some, and only some, of these hotels are a bit too posh to the point of feeling uncomfortable, and the Ascott Mayfair really made us feel at home.
-The blankets and quilt was amazing.
-Taxis pass by the hotel often.
-There is a church right around the corner.

Negative Things:
-The room, we stayed in a double bedroom apartment. We have a few complaints about the room. First of all, i don't see the point of having such a lovely thick blanket/quilt when the room itself only has a tiny and completely useless aircon. Secondly, there were just a few tiles missing in the floor. Thirdly, the TVs, which they have now changed to flat screens, are tiny, a bit too tiny.
-Location, although this is in one of the most expensive areas of London, it is nearly a 7 minute walk to the nearest Tube station(Green Park Station)! And we had to take the Tube very very often because taxis in London are very expensive.
-Although one of our rooms had a view of a lovely park, the other room had a view of a brick wall.

N/A things: We didn't eat at the restaurant because for breakfast it was 24 Pounds for one person.

Overall: Although the room was just a bit disappointing, the staff were great.

We stayed in a studio Standard room for just one night, the size was good (for English standards) but the bed was very small, I would say 1.40 m. width most, so the 2 of us could barely turn on the bed.
Fully equipped kitchenette. Another issue was the faucet in the bathroom, it was very hard to adjust the hot and the cold water to a normal temperature.
The breakfast which was included in the rate was very good, good variety and tasty.

Stayed here on family holiday to London. Being part of the trade fraternity and as selling the apartments from afar, I received a great insight as an inhouse guest.
I was hosted by my my UK supplier in a 1 bedroom executive apartment.
The check in was smooth, no problems.
On entering our apartment, we realised it was so small, so small, that it hit hard. I visit London every year and am aware of the real estate prices in areas such as Mayfair.
There was no starter kit in the kitchen, which all luxury apartments supply with. Where do you go at 8 pm for tea bags and sugar? The Indian receptionist was not helpful.
The bathroom was being repaired and the workers had left the boards lose in such a manner that anyone entering could have got hurt.
It was a pity to experience the Ascott Mayfair in such a sorry state.
We managed to make the rest of the 3 day stay as comfortable as we could, but the check in process just shows, that the eye for the details had been missing and management was not concerned.
They need major revamping as they are showing their age. Another day, a white receptionist was talking abput their South Kensington sister property, which had been renovated. Is she telling us, stay there, till we get a face lift?
It is always nicer to give a smile to the guest when they check in, rather than the still British upper lip. Most experiences start as soon as soon as you enter the door.