We had a wonderful time at Apostolos' apartment. He greeted us personally and was very accommodating even though our train to Berlin was an hour late. He took time to tour us around the apartment and gave us local tips, including a handwritten map of the Friedrichshain neighborhood. He was very friendly and helpful during our stay. The apartment itself was beautiful and spacious. A particularly nice perk was being able to do laundry, as we were halfway through our trip through Europe. I would gladly stay again.