Heidi's apartment was perfect for us (we were four, two children). We stayed for 8 days and the kids slept well on the sofas. The apartment was clean and had everything we needed for our stay in Oslo. The very best thing about the apartment is the location. I would definetaly stay in Heidi's apartment again. The only thing missing were window curtains in the livingroom. It could get quite warm and no way to block out the light. This would probably not be a problem if noone has to sleep on the couch! Communication with Heidi was very positive and prompt.