Naoual was a great communicator and we would recommend staying at this place. We did experience a hiccup at check-in but Naoual was doing her utmost to try and assist an earlier check-in, which was appreciated!
The flat itself is in an ideal location for experiencing Oslo and its various picturesque views, some of which can be seen from the balcony or roof top! The only real problem we experienced with the booking was the amenities - we had thought there was a hot tub, swimming pool, etc. available due to these being listed but these are actually separate to the building and a facility of the nearby hotel, The Thief (which we had almost booked!). This felt slightly misleading and is the only reason for a 4 rather than 5 star review!