I traveled with a friend who arrived one day before me. Jen was dropping off friends at the subway and went out of her way to pick up my friend at the same station. Jen and Kim were wonderful hosts. They gave us lots of tips on what to do and how to get there. The room was exactly as presented and is furnished in a very functional way. While the room looks out on the street, it's a quiet location, yet in the heart of Oslo. The bathroom is right next to it. In addition to the room there is a spacious dining table in the kitchen for breakfast. Breakfast options are cereal and toast with different topping options (spreads, cheese, butter, etc). We frequented the 2 nearby supermarkets for a few additional items we wanted to have for breakfast. The Slottsparken is 2 walking minutes away, the center is 5 walking minutes away. It is a very central location with lots of stores and restaurants.
Overall we had a great stay and if I get back to Oslo some day, which I hope, I will definitely check if I can stay with them again.