To echo the other reviews; great location and cheap as chips and the comms from Peter couldn't be faulted. We had tickets for the British Mueum which is literally round the corner, and 10 minutes walk to the Strand and Covent Garden for theatres. Tube stations Goodge Street, Holborn and Tottenham Court Road are all 5 minutes walk away.
The photos give the impression that there are two different bedrooms with the way the furniture and pictures are differently arranged so we were a bit surprised when the cleaner told us there was only one rom and a sofa bed. Having re-read the description and reviews more closely (after our stay) I feel that it's probably our fault although I would still disagree that it's suitable for 4 people. The sofabed was not really big enough for our two daughters (12 and 14) so two adults would definitely struggle.
The hallway and stairs has an odd smell and is narrow. The decor and furniture is a bit tired, the bed was possibly one of the most uncomfortable I have slept in, and the noise from stereo-blaring rickshaw cyclists on the street outside at 01:00 reflects the quality of the glazing. The sash windows also rattle in strong winds. The tiny shower/toilet/sink room is not lovely but is functional, however as it is directly off the kitchen you may want to avoid too much cooking.