Mats's place is really spacious and stylish and had plenty of room for our family of four (2 adults and 2 kids, ages 4 & 6). We had some trouble with the key pickup initially and which unit we were staying in was unclear, but once we got in, we were really impressed and pleased and had a comfortable four night's stay, with all the amenities we needed. It is worth noting that the stairs (4 flights) are sort of precarious, with a low railing, so if you have mobility troubles, do consider that, as well as if you have really young kids or a lot of heavy luggage. We also had to work with Mats outside of Airbnb to pay for off-street parking, because that is no longer available for free. In all, we really appreciated the great apartment and had a great time in Oslo, having a comfortable home base at Mats's.