I had a wonderful time starting at Max's place. You can easily fit 7 people without anyone needing to double up. Very close to the metro, but in such a nice location that we ended up walking most of the time. No living room, but the bedrooms are so spacious with the couches that it was easy to hang out there. Max was very welcoming and gave great tips about the city. I would stay here again if I was coming back to Berlin with a group.