Alex was a sympathetic and great host, whose communication was impeccable and who focused on problem-solving when needed.
Regarding the apartment, it is central and close to the S-Bahn-station Bellevue and a bakery. Some details were interesting, such as the shower in the kitchen, but the place was overall really comfy. We were 5 people who stayed there and found it to be worth the money we spent.
Make sure to stay here on your next trip to Berlin!