We have stayed for 3 nights at Anton's apartment and loved it - it was a perfect hub for us in Berlin. The apartment is just a minute away from the Ubahn and the Sbahn and we had no issues returning home even at night on the 1st of January. The apartment has everything you need. The kitchen is perfectly equipped even for a longer stay. Everything was spotlessly clean, the communication with Anton was very easy and we've received very useful instructions prior to us arriving in Berlin. I would definitely stay again next time I am in Berlin!