I had a really good time at Oslo and Merete had a lot to do with that. The apartment is really nice and has everything I needed, I loved that my room had a window which I could keep open all day. And Merete herself is a very good host, not only did she recommend very good places to visit but also provided the elements for me to wash my hiking shoes which were really muddy.
The apartment is really close and has easy access to the train station but is also close enough to the city centre, it's all within walking distance. If anything, I'd warn that the building doesn't look so good from the outside but it is really worth getting in to Merete's.