We have spent 4 nights in the apartment in the beginning of may. The apartment was great, clean and very fresh (with a daily housekeeping). It is located in a very nice and quite area in a heart of the city, but still comfortably away from the huge crowds of tourists. We have never used any public transport, as every place could be easily reached by foot.
The representatives of hosting company were very friendly and answered to all emails within a half an hour throughout the whole time since we booked the apartment till the time we have already been living there. We have booked a transfer from airport to the apartment with a stop for a checkin at a very friendly price, which made arrival in the evening very easy.
The apartment itself had no faults, everything was exactly as on the photo.
I would totally recommend this apartment to anyone planning to visit Prague.