My stay in Carolina's apartment was absolutely perfect! The location in Prenzlauer was ideal - there were plenty of places to eat nearby (including some very famous currywurst at Konnopke Imbiss & some tasty kebabs at Gemuse Kebab) and it's a one minute walk away from the M2 and M10 trams, so getting around was very easy.
Communication was also great - Carolina was always quick with replies and very easy to chat to when I met her. Out of the 8 apartments I've stayed in using AirBNB so far she would easily be the friendliest host.
The apartment is gorgeous, very clean, everything in working order. It was just myself staying there, but I can see the place being ideal for a couple or even a group of 3. The aparment is very spacious, bright, the kitchen is well equipped and the photos taken don't do the place justice.
I was very happy with my stay, and highly recommend this apartment to anyone wishing to stay in Berlin.