Martin is a lovely host. He greeted us and showed us around the space. He also gave great tips about where to eat (not just touristy spots, but actually super tasty ones).
The space was clean and easily accessible to u-bahn (literally a 5 minutes walk from the flat).
I can’t stress how important this was, but Martin responds very quickly to your messages. On the day we were leaving, my Uber app was acting finicky, so I asked him to call us a cab. Despite it being 7AM, he got us one extremely quickly.
Cheers