I was there in May. The location is great. Just 15-20 min walk to the ring or if you don't want that you have all the transport options right there (u-bahn, tram, bus). Actually tram is right at the door :)
The apartment itself has everything you need. Warm and cozy and obviously character .
The best part of this place is its host. They are amazing people: lisa, instantly got back to my several requests I had online prior to my trip and Mina is there with all the help you want or questions you have. She is so friendly and wonderful.

Thanks Mina and Lisa :)