We love Berlin! Our family stayed five days in Bernd's flat. It was great to use the kitchen and not have to eat out every meal (the goldfish were interesting company). It was easy to get around from train stations nearby. Corner market, bakery, and coffee are all within a block. What more do you need?
Bernd was an easy to be around host, welcoming and helped us orient to the city. He was also flexible when we wanted to stay two extra nights because we were enjoying the city and wanted to see more. We plan on coming back.