Biba's small apartment is great for a single traveller or couple who are spending the weekend in London. It is very close to Paddington and Marylebone stations and various bus and underground routes.
The bathroom is well appointed, but you have to be quite strong to turn the shower knob on! (It's fine once you know how that you need to use your strength) The pictures give a good representation of the space. When we stayed there were two double beds in the main room, as appears in some pictures, which does reduce the useable space. The kitchen is small, but fine if you're only planning to have a simple meal.
One other thing to note is the building's central heating. We stayed in January and the flat was very warm. You can turn the radiators down, but it didn't seem to make too much difference!
My girlfriend and I enjoyed our one night stay and would happily stay again for a short break.