Very central, but very quiet despite lots of restaurants, bars and pubs near by. Sparkling clean and with a very comfortable bed. Grocery stores close by and close to public transport. Apartment was more than big enough for one - the bed might be a bit small for two. Easy to check in/out. However the code for the doors only arrived a few hours before check in, not 3 days before as advertised. You will be dependent on mobile data to get it. Clearly a new apartment(s) and I have suggested they add small items such as dishwashing soap and kitchen/paper towels (I wanted to clean the kitchen counter before I left, but due to the lack of cleaning equipment in the apartment I had to leave it with stains). Note there’s no microwave. The WiFi did not work, so I couldn’t not get all the work I needed to get done as I was dependent on being online for it - though they have offered a refund for this which I hope they will go through with. They also told me they are in a process of installing better WiFi.
Hosts are very unresponsive unfortunately, and there were questions and messages that went unanswered. Though they are friendly and helpful when they do respond.
All in all I’m very happy with my stay - great location for exploring Oslo as well.