I don't think you'll find a better place to stay in Berlin than at Nora's! Everything was clean, comfortable and decorated beautifully. The location couldn't have been better. There were several public transport options within a 2-5 minute walking radius and Checkpoint Charlie was pretty much on the doorstep. There were ATM's and supermarkets very close by. Nora also offered daily bike rental at a cheaper price than most of the bike share services.
Nora herself was amazing. She was very friendly and very flexible, especially with check-in. We were free to come and go as we pleased. She gave some great sightseeing advice and was always quick to reply to questions via Airbnb.
Overall, we couldn't have asked for a better stay, and will definitely be back (as long as the place isn't booked out!)