I stayed here for the Berlin marathon and it just happened to be close to the start/finish line. I could walk/jog to the start line on race day as my warmup instead of having to rely on public transportation. Bernd's apartment is very close to bus/transit stops and local shops/restaurants. Even if you're not here for the marathon, I think it's steal an ideal location. From here it's equal distance to many of Berlin's main attractions. The apartment itself is very spacious and clean. A large master bedroom for a couple or small family. Another bedroom with a queen bed suitable for a couple. The 3rd bed room has 2 twin beds. There is only 1 bathroom, but that didn't seem to be an issue for us. There is also a kitchen with all the relevant appliances for making breakfast or a quick meal. Overall I am quite pleased with my stay. Bernd is a very enthusiastic host, but will leave you to your devices unless you have any questions.