A good base should you need to spend some time in South London. The place is clean and comfortable and Katja was very responsive to all my needs. Ample room space and clean and comfortable bathroom. Transport links are excellent.
There was an issue with the heating though. I stayed there in the beginning of December with pretty cold weather outside. Heating in the conservatory was not working which made this space not useable and a cold room to go thru between the kitchen and bedroom. The accommodation provided (the room and kitchen) is heated with electrical radiators that I was asked to switch off when out during the day. It took only few minutes though to heat the room upon my return. Katja was kind to turn the rads on in the afternoon before I return to the place.
I am sure this place is lovely in the warmer months when you can chill in the conservatory looking at Katja's beautiful garden. However I would avoid coming back in the winter.