We had a good time in the apartment. The place is small and basic but brand new, complete and clean and the location is super with a nice roof terrace.
Be aware that you only rent a (bed)room in the house. If both rooms are occupied it is a bit full.
Yang and Christian who are living in the apartment are very pleasant hosts. If you don't mind sharing the bathroom you get a perfect place in the best part of Oslo for a nice price.