I was visiting my friend in Berlin for a week, and needed not much more than a place to sleep at night. Ricardo's place was perfect! It is not very large but it is very well-kept and comfortable. Ricardo's brother was very responsive, friendly, and helpful and I had a very nice week.
It isn't super clear in the listing, but you basically get the whole apartment, not just a room in it. However someone will come in to feed the (very sweet) dog a couple of times of day.