The apartment is located in a very nice, swanky section of Oslo. There are many chic stores and restaurants located just outside of the apartment complex.
The host sent his mother to meet us and she was very sweet. She showed us around the apartment and suggested several things to do while we were visiting.
While we were 99% certain the host was one of the two residents we saw in the apartment, we never officially met the host and we are not even sure of his/her name (we don't think it's "Tjuvholmen" as that is the name of the development).
While we can appreciate rules and the need for order, it also felt at times like we were being monitored which in turn made us feel like we were more of an inconvenience than guests. If you are looking for a one night stay where you only need a bed and to be close to several of Oslo's attractions then this might be a nice option.
I will say we were initially only supposed to stay for one night, but our plans changed so we had to stay for a second night (we knew and changed booking in advance). The host was very kind to allow us to alter our length of stay.