Apartment has really good location to explore the city. But we were in winter and temperature inside never exceeded 18 degrees Celsius in the level of 1,7m from floor. It's ground floor and floors are tiled. So we slept in the sleeping bags in the loft bed and with some heating from air-conditioning and that was bearable. I still got cold though for the rest of our trip.
Host was trying to help. He gave us permission to use air heating and that helped us a lot. But I still will recommend this apartment only for those who can handle low temperatures well.