I really enjoyed my stay in this Oslo room. It's right in the heart of the city, just a couple of blocks from the underground train station that will take you right to the airport, and a short walk to waterfront area, museums, parks, cinemas, etc, and there are longer walks (or easy public transit options) to get to places like the Bygdøy peninsula (home of a bunch of cool museums and parks and beaches) and the Vigeland sculpture park. There's a small grocery store just down the street, and a yoga studio about a block away, so the location is pretty ideal. I stayed here for a month and walked pretty much everywhere, but if you prefer transit options, you can buy all-access transit passes from various locations and go anywhere.
This room is in a suite of 7, on the second floor of a building on a quiet side street. The suite has 3 bathrooms, 2 with showers and 1 which also has 2 washers and 2 dryers. (I was particularly impressed with this; bathrooms are usually the congestion point in these multi-room places, but here I never found a time that there wasn't a bathroom available.) And there was shampoo and soap provided, and a hair dryer, so unless you're picky about these things, you don't need to pack them. The kitchen was large and well equipped and had a couple of coffee makers (you'll have to supply your own coffee, but there were filters provided). The suite was super clean, and generally very quiet. (Although for shared spaces and city neighborhoods, I always recommend bringing earplugs and/or white noise apps, to deal with the inevitable exceptions.)
The only downside would be the internet connection, which could be unstable. It was usually working (running around 7MB down, 2MB up), and it should be absolutely fine for casual e-mail and browsing. But expect interruptions during HD streaming and video conferencing (I had to cancel a couple of calls that wouldn't stay up). I've mentioned it to the hosts, and you might consider contacting them first to see if they've managed to resolve it, if you have high connectivity needs. (Or get a 4G cellular plan while you're here.) But, again, this shouldn't impact anyone with more casual needs.
The hosts, Anders and Joanna, were great, replying very promptly to messages and were very helpful. Joanna was there most days, prepping rooms and taking care of the place, and she was delightful. I very much enjoyed my time here, and would gladly stay here again.