The communication with Magdalena was great. She was always available for us and replied fast. We didn't meet her personally but she sent us the entire information about the apartment, so everything went well and easy. The location of the apartment is a little bit outside but still fine to explore London. You have to walk 15 minutes to the underground and then you reach the centre of London in 30 minutes.
The apartment is very small - smaller and a little bit different than it appears on the photos - but ok for a couple and for a city trip. Unfortunately the flat and especially the floor, the bathroom and the kitchen table were not entirely clean when we arrived. Magdalena was asking us to rate the cleaner company that was in charge and apologized for this situation after I told her. So I am sure that the next guests will find a clean apartment.