The communication was perfectly! Quick and pleasant, through Airbnb and whatsapp. We got some handful guides and even rented a car of the father of the owner (in another town 2 away with the train).
The appartement is neat and feels new. A big ass tv, bathroom with shower and toilet and a small kitchen (no cooking possible) with a refrigerator.
The appartement is located in a quiet street in the basement. The only comments could be that in the courtyard, next to the window near the bed, a few containers are located. Not every user is carefully (enough) with the sound they produce. Some slam the container lid and their garbage, even very early in the morning. The door pusher to this area isn't working that good.
The location is 5 to 10 minutes away from the shoppingmall Palladium and the old town square. If walking isn't a problem even the Prague castle is doable. It was perfect for us.