We stayed in apartment 8 at the top of the Art House apartment building.
Prior to arriving communication with 'Prague Resistances' who service the apartments was very good. Messages were replied to quickly and they also arranged with an airport transfer.
The apartment was very spacious, modern and comfortable. The bathrooms all worked very well and so did the heating. Its one of the best Air Bnbs we have ever stayed in.
A couple of things that we had issues with were the noise in the evenings. The lift makes a very loud sound as it is going up and down. Plus there was a very loud party going on in another apartment until around 2am one night. I'd recommend bringing ear plugs.
The apartment's location is fantastic.