The place is cozy and spacious as the title says. A great living room area to relax and a big kitchen if you want to cook as well. The space is not too far away from the Central train station, but access via public transport can be a little tricky with suitcases.
We did have a couple of issues - no answer to two small requests, and the two single beds were very creaky and made it hard to sleep.
Other than that, check-in was as described and the location and price pretty good for Oslo.