We stayed two nights in a standard room in early June. The breakfast was excellent and our room, although small, was clean and comfortable. The main problem was the lack of air conditioning, or even ventilation in the room. As a result it was hot and stuffy, making sleep difficult. The hallways are air conditioned. There was an unusual heat wave at the time although the room would likely be hot all summer. The room had a small window that was locked and the hotel would not open the window if we were in the room, citing safety concerns. This could easily be fixed by attaching a short cable to control the window opening, as many other hotels have. There are more expensive rooms with windows we saw opened, but the rooms are on the street side which is very noisy with trams passing every few minutes. A minor issue is that one of the two elevators has been temporarily out of service since March 21. There are other Scandic hotels in Oslo so maybe check them out first or look at different hotels.