Klaus made me feel very welcome, even met me at the train station then rode metro w/me to the flat. Everyone was so nice, and laid back. Room was great, with a big comfortable bed, and was very clean. I stayed only one night, was going on to Greece and they even gave great tips on what to do and where to go because they are familiar w/ Athens. Neighborhood was nice, safe, stores and restaurants close by, took a walk at 10:00 pm and had some ice cream at nearby shop. Walked to train station early next morning and took bus right to airport - just as Klaus explained :). Very nice hosts & so helpful!