Not that there were particular problems with the flat but the pictures were much nicer than the reality.
It had less comfort (no coffee, proper dining area, proper sofa for a 3-bedroom flat, TV, magazines, full shampoo/soap) than the other cheaper Airbnb flats I stayed. Maybe it is particular to London.
I would not recommend to a family, but for young bunch of friends looking a place to crash it would be OK.