The owner of the apartment is very prompt and responsive. He is also kind enough to prepare a bottle of wine for my stay.
The apartment is very near Oslo Central Station and there is a bus stop in front of the apartment door. There is also a grocery store, KIWI, 5 mins walking distance away.
There are nice amenities such as ironing board, hi speed wifi, cable TV, Dryer, Washer, and a full kitchen spread. Just all what I need.