Great host, great communication before our stay!
The accomodation is centrally located close to the central station and bus terminal. The appartment itself is very quiet and spacious, outside it was a bit louder at night (we had to keep the window open, since it was quite hot - probably not very common problem in Oslo ;)) It is a lively and diverse neighborhood.
I did feel safe, but not entirely comfortable at walking to the central station alone at night.