Very good location, at the border of Mitte and Kreuzberg. Metro at your doorstep, east side gallery (the remaining wall) just 15 min away, Oranienstrasse with nice mediterranean and middle east cuisine cafes/restaurants and crowded bars is 15 min walk, supermarket is just around the corner.
The apartment is VERY big and equipped with everything you need, incl. kitchenware and appliances, towels, linen, and whatever you could imagine. Very nice details added for the comfortable stay - paper towels, tissues, shower gel and much more. Quick WIFI is free of charge as well which is a big plus.
Though you have to be prepared to stay on a 10th floor of an apartment block, but to get a nice panoramic view from your window.
We enjoyed our staying there, there was no any problems or issues raised. Ilona is a very nice host, and the apartment has good energy too.