Our stay at the Marshmallow flat was just great! An amazing flat in a fantastic location and an amazing host! What else do you need?! :-) Martine has been great as soon as we arrived, was very friendly and super kind! She gave us some suggestions and was always quick when we were emailing each other. The flat and its roof terrace look even better in real! I had a great time thanks to Martine, her kindness and her flat! I would definitely recommend it to anyone who is willing to travel to Oslo!! :-)