Alex was such a great host! He got in touch about a week before I arrived to arrange a time to meet at the apartment. Unbeknownst to me, I was planning on checking in right when there was a street fair going on around the corner, so public transit was re-routed. Alex was super patient and waited for me, and then gave me a great walk through of the apartment and provided some tips for my stay. He also gave me a great list of recommendations nearby that came in handy over the weekend.
The apartment itself is very clean, well-furnished (seriously, the living room was so nice) and had a well-stocked kitchen. It was super convenient to get to the S-bahn and U-bahn to get around the city, and it's close enough to the city center that you can walk most places. Would definitely recommend staying here and hope to come back one day!