Signe's friend (Inge) received us very kindly, giving us keys and tips. The apartment is exactly as in the description, it's very nice and comfortable (except the stairs to reach the apartment at the 3rd floor, for lazy people :P), I found the bed perfect-sized for 2. The neighborhood is well served by buses (5A): there's a ride every few minutes (few seconds in peak hours).
Signe is very nice, she gave us a local beer and she's very fast in answering. We enjoy a lot our stay, thanks a lot Signe!