A bit of a hike to the Oslo harbor, but well worth it. You can follow the river path down to the train station (and past that to the Opera house), walk up the river and see the old factories and a gushing waterfall and other sights. Or, if you head towards the harbor, google maps will direct you up a picture perfect street, the oldest church in Olso and beautiful cemetery.
There are two balconies in this apartment and a washer/dryer. It was quiet at night yet you could see people with their children enjoying the preschool playground and out on their balconies. So it's quiet but still lively. A Rema market is just steps away, and other shops are close by (including a vinmoplet, which you will need if you don't drink beer.)
This place has the fanciest coffee maker I've ever had in a rental and a well stocked kitchen in terms of plates, glasses, cookware, etc. Bravo.
The owner was very responsive to my concerns when I had difficulties using the key as a key fob. This was a new one for me but he was super helpful. Also, I liked being able to pick up the keys nearby and not have to wait for someone. That was great.