The hotel is located in a historic building from 1730, home of the Duke of Westminster, completely renovated in 2008, offers its customers a gym with unlimited access 24 hours a day, a beauty salon the Sanrizz, with a hairdresser and beauty specialist, a terrace overlooking the city of London. The reception is open 24 hours a day, the hotel also has a private car park (charges apply) for those who reach the city by car, laundry and ironing service, an ATM, a currency exchange, a car rental to sightsee around London freedomly and a ticket service to reserve theater plays or exhibitions. Are also available to guests 31 meeting rooms for organizing any kind of event, furnished with audio and video equipment, interpreters and organizational and technical staff support that will be provided for the preparation of the event.

The Grosvenor House has 494 rooms furnished in contemporary style with some English antique to commemorate the historical origins of the hotel, guests are provided with tea or coffee making facilities, iron and ironing board, adapters for sockets current, queen or king size bed with duvet, two telephones with voicemail, speakerphone and two-line, wireless Internet access (surcharge), flat screen TV with satellite channels, Pay-per-view movies for a pleasant evening in relax and a stereo. The hotel is suitable for those who go to London for work in fact has fast wired internet (charges apply), a large work desk, laptop size safe, local and international newspapers are available on request. All rooms are equipped with a marble bathroom with double vanities, make up mirror, hairdryer, bathrobes and slippers, mini-bar and bottles of mineral water. Room service is available 24 hours on 24. All rooms are non-smoking. There are also rooms with facilities for disabled guests and rooms with hypoallergenic furnishing.

The hotel has four restaurants and three bars, the JW Steakhouse is a restaurant with dishes made with a grilled selection of American USDA prime beef, but also offers dishes of fresh seafood and salad for a light lunch, is open daily for breakfast, lunch and dinner. The restaurant Park Room and Library is dedicated to the ritual of Afternoon Tea and offers a selection of drinks alcoholic and not, paired with sweet or savory snack, sandwiches and light lunches, is open daily for breakfast, lunch and dinner. Corrigan's Mayfair restaurant is headed by chef Richard Corrigan that offers its guests a menu with international and seasonal dishes prepared with selected ingredients, it is possible to reserve private rooms for lunch or dinner, the restaurant is open daily from 12 am to 23 pm. The Red Bar is a place where red is predominant, as the name suggests, provides its customers with a extensive wine list, beers, champagnes, cocktails, British and international liqueurs accompanied by a selection of sweet and savory snacks is open in the evening every day. The Bourbon Bar is a blended with JW Steakhouse offers a fine selection of British and international whiskey and bourbon, as well as a menu well stocked with wines, spirits and cocktails, is open daily for lunch and dinner. The Park Lane Market is a café open for breakfast and lunch and offers its customers a selection of tea, coffee and salty snacks or sweets for light and relaxing breaks.