Ahmet is such a great guy and a very communicative host!
The place itself offers good value for your money, it is really clean and comfy.
The bus stop is about 5 minutes from the apartment through a couple of public stairs and passages. It takes the bus about 15 min to the city center (either to Nationaltheatret or Sentralstasjon).
There is also a supermarket and a Vinmonopolet nearby.
I was mostly strolling around the city so only came on the nights to sleep but I had no complaints whatsoever and would be happy to stay again!