I saw a comment about noisy neighbors upstairs, but the host assured me that the apartment was quiet. The upstairs neighbor stays up late and gets up early, and I found it impossible to sleep through their footfalls, drawer slamming, thing dropping, and who knows what else. It sounds as though their kitchen is directly above the bedroom. Outside rooftop parties from buildings some blocks away but clearly audible with a direct line of sight didn’t help. I finished my Oslo stay in a hotel and finally slept.