Three of us stayed at Lasse's place on our first trip to Oslo - we had a wonderful trip and it was a perfect base to explore the city from, as it is both incredibly well located and furnished with everything you'd need to have a great weekend (a particular perk was the musical instrument, as we're all musicians!). Check in and out was easy and painless, and the place is clean and furnished in a design-conscious modern style. A great choice!