Frank is an amazing host...very fun, interesting to chat with, helpful, and accommodating. I loved the room, the bed was very comfortable, and the entire space is loaded with character. The location is perfect, and quiet, even though there was a lot of activity close by, around the clock. The neighborhood is very fun, and access to the U-Bahn was really convenient. I also felt incredibly safe, which was important because I like to stay out late, and I was traveling alone. I have no complaints. I can't say enough nice things, and I will definitely come back next time I'm in Berlin.