Andrés place is very welcoming, comfortable, well equipped and super clean! We really liked the flat and André was super nice and texted us all important info in advance. You are not directly in the city center but in a nice and more village-like and green part of Oslo (still in walking distance to most of the interesting places). Parking in general is a bit tricky in Oslo, therefore I would recommend to leave the car outside the city center (you can even find free parking if you are lucky). Checking in via key-box worked perfectly.
Can definitely recommend!