Gonzalo's apartment was great! The location is fantastic, it's within walking distance to the city center (about 10 - 15 minutes) and there are restaurants, cafes and a grocery store just a few blocks away. There is also a tram stop nearby the apartment which was very convenient for getting to other parts of Oslo.
Gonzalo was very responsive to messages and his friend James met us the day we arrived to let us in. Overall, we had a great stay, I would definitely recommend this place!