We arranged a transfer from the airport to the apartment with alex, it was absolutely fine, the driver was at the airport. The apartment was just like the pictures! Small but very nice an fully equipped. Alex gave us a map as well, with some of his favorite places, nice to start with! The apartment is at a bussy street and not much ventilation, so it was warm inside also during the nights, it probably will be hot in summer time.

We also asked voor a return back to the airport, but unfortunately they dit not send a driver this time, and after a phone call they send a driver to the wrong place.
This is probably because there are several people working, is was not the " authentic" air bnb feeling of staying in someone house, but more like a business. We took a yellow street cab, and he was even less expensive than the one we could arrange with Alex, so ... small tip just take a yellow cab ;).
In short: very nice wel equipped apartment, in the centre of Prague! Looks like the pictures :) We only met Alex, very nice and helpfull.