I agree, a Chinatown recommendation would be useful. The other two Dim Sum destinations for me are Royal China (not club) in Baker Street which can be excellent and given the absence of a view you could be in Hong Kong, also Phoenix in Marylebone. My one visit to Hakkasan convinced me that it was extraordinary but not so much the food. Friends like Yautcha but I think it is expensive and not great, more of a ‘dining experience’ than just good dim sum. Ping Pong has not ticked any of my boxes other than being near where I had parked once.