This is a wonderful apartment in a bustling (new) area of Oslo. It is close to the opera house and about a 10-minute walk from Central Station.
There's a supermarket next to the apartment block, restaurants, open spaces to sit and relax next to the water. As it was really nice weather during our stay, we had the windows and balconey doors open and people were outside - if you are a light sleeper, you might want to bring earplugs.
The apartment itself was nice, clean and tidy. All amenities were there and up to good standard (kitchen, dishwasher, washing machine, rain shower, smart TV, etc.).
If it's warm during your stay remember to ask the host for a fan as the bedroom gets quite warm at the end of the day. We looked and assumed there wasn't one, but there actually was, so no criticism, just a tip.
Finally, host Nina was very welcoming, attentive and thorough. We asked her a few questions during our stay and messages were promptly answered. For those unfamiliar with Oslo, Nina can tell you a lot and there are tourist guides available at the flat.
All in all, a nice apartment in a great location - we'd definitely stay here again.