We enjoyed our stay in Renate's apartment very much! It is exactly as she describes it; a cozy apartment with a balcony. The kitchen is fully equipped and cooking dinner there was almost as easy as at home. The bed is comfy. The best thing about the apartment is the balcony though. We ate dinner there, read a book & drank a glass of wine in the evening. It really adds to the vacation feel! The only (minor) downside is the shower which is a bit cramped.
The metro station is around the corner and takes you to the center of Oslo in about 20 minutes.