We stayed in the apartment for 4 nights. Elisa and Francesco were very kind and available for our very late check-in and very early check-out. The apartment is perfect for two and was very clean and neat. The bed is quite comfortable too. The main attractions can be reached by public transport easily. We had no problem finding the address and reaching it after midnight.
Elisa and Francesco welcomed us with free drinks in the fridge and gave us very nice tips about Berlin, both before the trip and once we were there. All in all, it is a great place to stay! We would come back!