I stayed a week at Mechthild's place and would highly recommend it. The location is fantastic, in the heart of one of the most desirable Prague neighbourhoods. The flat and building have a lot of character. The bed was comfortable and it was very quiet and peaceful in the flat. The flat is actually larger than it looks – I had a lot of space to myself and it would comfortably accommodate 2 people. Mechthild was very friendly and welcoming and I would have happily stayed longer.