I have just stayed at this apartment for 16 nights in November 2014 for business purposes with 2 colleagues. Both Joseph and Perry were very helpful with the booking process and on arrival. The apartment is about 10 minutes on the bus from Warren Street tube station (nor 29 just outside the apartment) and only a few minutes walk from Camden tube station.
The apartment is in a block of apartments and is on the ground floor facing a side street and was surprisingly quiet.
There are 2 bedrooms, one with an Ikea double bed, chair and small closet and a window. The other has a low futon bed, couple of shelves and thats it, no window either - it is more like a box room.
The lounge and kitchen area are just as in the photos, great tv, wifi and all you need in the kitchen. the bathroom is also very acceptable with a decent shower. There is also a hairdryer, iron and small ironing board.
There is also a double bed settee with a thin mattress in the lounge, but it is comfortable - except that there wasn't a duvet/quilt or pillows for that bed, only sheets.
In general, this apartment is acceptable for most needs. Perhaps the 2 weeks we stayed was maybe more than most and we did begin to have slight problems with the damp. I think the apartment is perhaps not used much and its got 2 single glazed windows which were constantly covered with condensation and apartment and building smelt very damp. The smell clung to your clothes and trying to dry clothes and towels after washing seemed to take days. The bedding also smelt damp and sitting inn the apartment also felt damp to touch.
The only other issue that put me off, was the lack of cleanliness - particularly the floor, bin and fridge, but otherwise, it was ok and I guess if you want very clean, go book a hotel. In saying that, unlike previous Airbnb's we didn't need to clean the bathroom or kitchen when we got there.
This apartment is very convenient for central London and for a short term let, I would recommend it - I think the fact that it was damp was due to no heating being on, no air circulation and also the time of year - this apartment may be totally different in the summer.
For what we needed, it fitted the bill, it was just the damp that was unpleasant after 2 weeks.
I think the entire building may be damp, so the dampness may not be the hosts fault.