We had an excellent time in London and were able to walk virtually everywhere given the superb location of Johnny's flat. You are surrounded by theatre-land, restaurants and unique and characterful shops as well as all the usual brands.
Monmouth Street is a hive of activity in the Seven Dials area so it is not quiet at the front of the flat. The bedroom however is at the rear of the property and we were not disturbed at all at night.
The flat is artistically decorated, spotlessly clean throughout with a modern kitchen and bathroom/shower facilities; the shower room is very compact but perfectly fine.
We would definitely stay again if available: you can see why it is so popular.