I went for a weekend trip to Berlin with my sisters for the first time and stayed in Michaels lovely flat. It was a total of 3 of us and the flat was perfect size. The surrounding areas where really great and had everything you'd need. We signed up for 'Next bike' that have a rack just 1 min walk away from the flat and could get to Kreuzberg & Friedrichshain areas within minutes on the bikes. Biking lanes in Berlin are outstanding so we actually biked everywhere for the whole weekend.
The flat was really clean and have everything you'd need and Michael had left maps and a list of his personal recommendations which was a really nice touch.
Would happily stay again!