Grosvenor SquareLondon, England W1K 6JP Phone: +44 20-7493-1232Fax: +44 20-7491-3201Toll Free: +800-221222 Hotel Website Classification 7 Superior First Class Commission Rooms Rates 10% 237 $482-$803 (USD) Hoteliers! Is your information accurate? Update Here London Marriott Hotel Grosvenor Square Location & Neighborhood Heart of Mayfair - 25 MI, 35 min from Heathrow airport. 0 MI from LondonNearest Cross Street: Grosvenor Square