Fraser Bond are the leading lettings and property management agents for Nobu Hotel London Portman Square - London W1H. Nobu Hotel London Portman Square building in Marylebone, London W1. The new hotel comprises 249 bedrooms and suites, as well as a Nobu restaurant, ballroom and meeting facilities. Front of house interior design by David Collins Studio. Guestroom interiors by Make Architects. Operated by London + Regional Hotels. History Nobu Hotel London Portman Square opened in December 2020. Former Radisson Blu Portman Hotel building at 22 Portman Square in Marylebone, London W1. The hotel, originally built in.