Stayed at Robert's place for 2 nights. The location is amazing, you can reach every cool place in Kreuzberg within minutes. The check in was super easy and there are lots of public transport options avalilable nearby. Robert is a really cool and friendly person, you'll feel like you've been living there for ages. The wifi is really strong which was a big plus for me as I had to work. I would definitely book his place again for an authentic Berlin experience.