Stayed for two nights with my friend.
Liked Anette's place very much. Modern with lots of light and space. Bed was very comfortable. Yes, grab a pair of earplugs if you sensitive to train noise - it was totally fine for me. Want to mention warm floor in the bathroom- like it a lot.
Location is very convenient - close to the center, Oslo S station, Oslo opera (10-15 min walk). Neighborhood is great for running.
Will be in my favorites for my next trips to Oslo.