I booked this apartment on behalf of two work colleagues during their stay in Oslo, and they had a wonderful time. The apartment is fresh, stylish and located in wonderful part of Oslo (Grünerløkka), especially if you like cafes and restaurants. Very easy to find, and so accessible by public transport from central Oslo. Communication was fast and helpful, and check-in was a smooth process. One thing to be aware of: the apartment is only accessible by stairs, and is on the top floor.
Can easily recommend this place if you're looking for a nice place to stay in the hippest part of Oslo.