The appartment is amazing, very spacious with everything you need. The double bed is big and comfortable. We enjoyed the balcony in the sun looking over the courtyard below. The view is very nice from the 4th floor, but there is no elevator so you have to enjoy taking the stairs.
The location is wonderful. Grunerlokka is a lovely colourful neighboorhood with nice stores, cafes and restaurants and it is also really close to the akerselva river and the Vulcan district. The city centre is a lityle further away but walkable or you can take the tram which is really close and goes directly into the city centre.