I stayed in Nina's apartment for nine days and really liked it. It was exactly like the pictures; tidy and spacious, and is easy to get to by public transport. The apartment is located right in Sodermalm, with lots of bar/restaurants and a very good vibe.
Nina was easy to communicate with, as was her friend who I met for the keys. Nina also left a handy welcome sheet with house-rules&instructions to operate the TV etc.
I would definitively stay here again.