Superior Room, Guest room, 1 King at JW Marriott Grosvenor House London

Fully equipped, state-of-the-art on‑site Fitness Suite/gym with 24‑hour access and dedicated quiet spaces for stretching and yoga.

Quiet spaces within the Fitness Suite designed for yoga (hotel advertising 'quiet spaces for yoga' as part of the fitness offering).

On‑property salon and wellbeing offerings including massage and beauty treatments; hotel promotes a 7‑Day Well‑Being programme and on‑site Steven Carey salon and offers massage/beauty services per operator listings.

Property-level listings and booking platforms indicate availability of a sauna as part of the hotel's spa/wellness facilities.

Spa lounge / relaxation area and massage/beauty treatment services listed on hotel and third‑party pages (hotel promotes wellness programming though no dedicated Marriott 'spa' microsite is published).

Multiple on‑site fine dining outlets including JW Steakhouse (steakhouse), Corrigan's Mayfair (award‑winning British/Irish restaurant by Chef Richard Corrigan) and Rüya (Anatolian cuisine) located within or adjacent to the hotel.

Park Lane Market / coffee house offering grab‑and‑go items, Starbucks coffee and light bites on property for casual dining and takeaway.

Several bars and lounges on property including Red Bar (cocktails overlooking Hyde Park) and The Bourbon Bar (curated collection of rare bourbons on display).

JW Garden — an urban oasis/terrace-style dining area with expansive views of Hyde Park offering full restaurant service in an outdoor/terrace setting.

JW Marriott Executive Lounge on property serving food and beverages daily for eligible Marriott Bonvoy Platinum members and suite guests.

Award‑winning traditional British Afternoon Tea served daily in The Park Room with views over Hyde Park and live piano entertainment.

On‑site partner restaurants (notably Corrigan's Mayfair) provide multiple private dining rooms and private‑hire options for intimate and corporate dining events.

Room service is offered (24‑hour room service advertised on major booking/operator pages and hotel FAQs).

On‑site parking available with valet options (daily parking fees stated; electric vehicle charging points on site).

Hotel lists private car service and limousine/van service available on property and offers concierge assistance for airport transfers (shuttle not provided).

On‑site business centre and conference support services available for guests and event organisers.

Extensive meetings & events facilities including 23 event rooms, large historic Great Room (one of Europe’s largest event spaces) with capacity up to ~2,000 and more than 5,000 sq. metres of event space plus multiple breakout rooms.

Digital Check‑In and Mobile Key services supported through Marriott's mobile platform and promoted in hotel property features.

Same‑day valet dry cleaning and on‑site laundry/dry cleaning services available for guests.

Babysitting/child services available on request (listed on major booking platforms as an additional‑charge service).

Pet‑friendly policy permitting dogs under a specified weight (pets permitted; assistance dogs always welcome) and related pet amenities noted in hotel policy.

Evening turndown service offered as part of the hotel's full‑service guest amenities.

Eligible guests (Marriott Bonvoy Platinum and suite occupants) are granted access to the JW Marriott Executive Lounge located on property.

Select public outlets and Park Room offer sweeping views over Hyde Park and Park Lane; many meeting rooms and suites advertise park-facing vistas.

Historic Grosvenor House hotel on Park Lane originally opened in 1929 and retains landmark ballrooms (the Great Room) and period architectural features.

Public spaces and signature suites reference curated artwork and design features; Royal Suites and other areas highlight original and commissioned artworks as part of interior design.

Located on Park Lane in Mayfair directly opposite Hyde Park and close to Bond Street, Buckingham Palace and central London attractions—promoted as a prime Mayfair address.

Green Key certified property with published sustainability initiatives (Green Key accreditation, EV charging points, food‑waste reduction programmes and reported carbon/water footprints).

Select suites are outfitted with premium Aromatherapy Associates amenities (Aromatherapy Associates products used in suite amenities).

Executive/Club Lounge access restricted to eligible Marriott Bonvoy elite members and guests staying in qualifying suites, providing a members‑style private lounge experience.