Communication was pretty easy and we could message Tereza at everytime during our stay, if something did not work. The appartement is very clean, especially the bathroom is very hygienic. However, it is located a bit outside of the center of Prague, but it is near to the Expo and the Zoo. It is also possible to walk to the center within 30min.
One problem for us was, that the appartement was quite cold and not heated when we arrived. Since we turned on every heater it got cosy after one day. It in living room, as well as in one bedroom, it is quite noisy because of the boiler and the main road beneath the appartement.