I did not meet Lena in person because she was out of town when I arrived; however, I was met by one of her very nice and helpful friends. I did have to make a few changes to my arrival, and Lena was flexible and quick to respond. The apartment itself is cozy and would be best suited to 1 person or a couple. There is a separate bedroom, separate living/dining area, and separate kitchen and bath spaces. The kitchen is well-equipped, and the bathroom is relatively spacious for an apartment. The wifi and heat worked fine. The overall effect of the spaces is clean and uncluttered. Although the apartment building is located on a street with moderate traffic, this is a garden apartment in a courtyard, and it was pretty quiet. The apartment location is great, just a few minutes walk from a U-Bahn stop. It is 2-3 blocks from the lovely Bergmannstrasse and Marheineke Markthalle. Close by are Curry 36 and Mustafa's Gemuse Kebap on Mehringdamm. A few blocks in the other direction is SoLuna Brot und Oel, which is reputed to have the city's best bread (based on my sourdough rye loaf, I cannot argue). Viktoriapark and Tempelhofer Feld are in walking distance. All in all, you could explore all of Kreuzberg on foot or the aid of a few train stops from the location of this apartment, then return at the end of the day for a comfortable rest.