We have just returned from a fantastic weekend in Clair's amazing underground apartment. I wasn't aware the apartment was underground when I booked it and not until I saw a few reviews days before we were due to arrive.
Do not let that put you off. If anything I think it should be a selling point. It felt very private and was the perfect base for the London marathon, not only because of the fantastic location, so close to Greenwich Park, but because you can be assured a quiet and undisturbed night's sleep before the race. However I shouldn't be telling you this as I want to book it for next year, should I be lucky enough to get in again.
Don't worry about lack of privacy when you see the windows are on the ceiling above the bed. There are strips of astroturf that you can use to cover them over should you prefer to block out the early morning light and ensure more privacy, although we never had the feeling we would expect to see anything other than possibly foxes or Clairs gorgeous dog looking in from above.
The apartment was very well equipped with everything you would need for a short stay and was very stylishly decorated and furnished. We felt thoroughly spoilt and very comfortable there.
The shower was very good with plenty of hot water.
I cannot fault this place and can't wait to return maybe even before the next marathon.