We went to Oslo in May for 4 days and it was really awesome. We visited almost all the city walking and slept in Askim, a little town outside Oslo. We met thanks to couchsurfing people who were really great. We also visited some museums like the architecture museum, the design museum, and the contemporary arts museum. The part of the town that we really loved was Grunnerlokka (great coffee place - Kaffebrenneriet ++) and Uranienborg (we had coffee in Apent Bakeri +++). There is also a place called Bygdoy which is a peninsula, a beautiful place to have a walk and look at the entire city.
By M.