Marthe's apartment is the perfect place to stay to explore Oslo. It's well located in a quiet & nice neighbourhood, just a 20 minute walk away from the city center. Supermarkets and public transportation is literally in front of your doorstep. Although the apartment is quite small, it makes perfect use of space and works out even when staying in a group of 5. Checking in and out was very easy and flexible. Can't recommend enough to choose Marthe's apartment.