The apartment looks exactly like on the pictures, the place is huge, nicely furnished and there's everything you need. I unfortunately did not meet the hosts Daniele and Patrizia in person, but everything worked perfectly smooth.
Moabit is a bit outside of where "Berlin is happening", but there are a couple of nice cafés and breakfast places nearby and the metro station Birkenstrasse is close.
I'd recommend this place to groups of four or more.