We loved our stay at Lena's flat. The location is exceptional with a grocery store, tram stop, underground station, and many excellent restaurants and cafes nearby. Even though there is so much going on around, Lena's flat is quiet and peaceful.
I would just offer one clarification: there is one main living room with the bed and a fold out couch. If you have more than two people you will all be sleeping in the same room. This was fine for us but wasn't totally clear from the pictures.
Overall we highly recommend! We loved our stay.