I spent three months in Daniel's flat and everything was good. Daniel is a nice, interesting person and a really good host. We didn't see each other very often but everytime we did, we had nice chats about everything.. The flat itself is comfortable and I felt at home immediately.
Prenzlauer Berg is of course a nice area with a lot of cafés and shops. If you wish to live in a party-area, Prenzlauer Berg is not really the right place for you, I think. But you can find a lot of nice, calm places to relax and really good restaurants for little money.
You can get to the S-Bahn stations Schönhauser Allee and Bornholmer Straße in 10 minutes. There are also a couple of places where you can buy groceries.