I was able to arrange a long stay with Irja, and I really enjoyed my visit! The room is cozy and bright (but with a big shade if you're not used to Scandinavian summers), there's an ample kitchen with everything for cooking, and the location and value can't be beat. Irja and I mostly kept to our own sides of the apartment, but she was easy to get along with and fun to talk to. The apartment is on a street full of shops and cafes, right around the corner from a spectacular microbrewery (Mikrobryggeri), and about a 10-minute walk to the beginning of the city center. It's in a lively area, but it's also residential enough so that it mostly quiets down by about 10, even on weekends. It's a great base for jumping into Oslo!