My two friends and I had a nice time staying in Kristiana's cozy flat for 5 nights. We all liked it as it made us feel very comfortable. Kristiana is very responsive and flexible, too, regarding queries and checking out.
One side note for future travellers: make sure you know how to get to the flat, especially when you decide to take the public transport. A friend and I both individually mistook the BUS number 11 for the TRAM number 11 and ended up in nowhere familiar or close to our destination. Eventually it took each of us 3 hours to reach the flat from the airport. :-/ Clumsiness, I know, and probably bad luck.