Josef's place was exactly what I had expected - perfect. First, it was easy to obtain/leave the keys. Most importantly, it was very clean, completely functional (toilet, bathroom, kitchen appliances, etc.), and had interesting and pleasant interior design. My friends (3) and I felt very relaxed and comfortable in the apartment - the beds/linens and living room furniture were perfect for making us feel relaxed so that we could be refreshed for the conference that we were attending during the days. The neighborhood seemed very safe and it was an easy (~10 minute?) walk to the U-bahn. Plenty of grocery stores in the area, too. Also, while there was no need to be in communication because everything was very self-explanatory, Josef was very responsive all three times I contacted him - during the initial confirmation of availability; to let him know that we had arrived and everything was OK; and to let him know that we had checked out and that we had left the keys in the designated location. I would be happy to stay at Josef's apartment again, and I highly recommend it to others.