I stayed for one week in the cosy and comfortable apartment from Jan and Kate and had a very good time. Everything was in a very good order and also very clean. Communication with Jan and Kate was excellent, they always answered very quickly. I arrived much later then planned because my train was cancelled and Jan welcomed me in person, gave me the key and showed me the apartment, which was very nice.
The apartment is located at the courtyard/backside of the building, which makes it a bit dark but also cool in summertimes when it's hot outside. It was also very quiet, no noise. The neighbourhood is beautiful with many good restaurants and café's in walking distance. Also public transport is close-by. I can absolutely recommend the apartment for a good stay in Prague!