I had a great time in Berlin, with two teenagers. The room is near a trainstation (7 min walk), the public transport takes you to the city center in appr. 20 min. We also rented bicycles for one day (from Speedy Bikes, a 15 min walk from the room), which was perfect transport in Berlin, you can easily cycle from the room to Berlin city center. And if you want to get a quick and vegan (also glutenfree!) dinner in the area in Neukolln, try LoveBurger (15 min walk).
The bed and sleeping couch in the room were fine, so is the shower. It's good to know though, that the room is at a noisy industrial location. Keeping the windows closed (especially early morning) helped to keep the noise out. We felt the price is quite high for the room, which was a bit old and noisy, but nevertheless we had a great time in Berlin and it was easy to go around.