The case for The Lanesborough is the people, not the building, though the building does its part too. A concierge lent his own tie, several fresh off their own hangers, to a guest short one for a business meeting. Butlers introduce themselves in person on arrival and remember thermostat settings from the last stay. Long-time London visitors consistently rank the service above Claridge's, the Dorchester and the Mandarin Oriental Hyde Park, and it holds whether the trip is a wedding weekend, a family holiday, or a quiet two-nighter. The Alberto Pinto interiors are maximalist Regency, not restraint, and that will split a room, but the soundproofing over what is one of the loudest junctions in London gets remarked on so often it's become a running joke among guests. Only 93 rooms means it feels like a house, not a hotel.
Price the flaws in before booking. The Bridgerton afternoon tea has become genuinely divisive: some travellers call it the best themed tea in the city, others describe dry sandwiches, thin theming and cakes that don't match the marketing at close to £400 for three. Go for the room and the pianist, not for food that lives up to the name. There's no pool, which puts the Berkeley, Corinthia and Mandarin Oriental ahead on that single point. Junior suites can still have one sink despite room for two, and there's no configuration built for two kids plus two parents, so bigger families should check specifics first.
None of that changes why people come back. The Little Butler Bootcamp and the resident cat, Lilibet, make this a genuinely strong family hotel, not just a handsome one. Book it for the staff and the quiet, and expect the tea to be a coin flip.