This apartment is one of the roomiest we ever stayed in Europe. It is also nicely and tastefully furnished. I would rate it excellent on the three most important aspects - beds, bathrooms and kitchen. The beds are very comfortable, and while we didn't need to use it, even the extremely roomy sofa in the living room seemed appropriately firm and comfortable.
The bathrooms were relatively spacious too when compared to the three other airbnbs we stayed at during this trip to Scandinavia. The showers had nice pressure and were relaxing.
The kitchen was well-equipped with all the necessities for travelers - appliances, cookware and basic supplies. It bears repeating that it is also quite roomy.
The host even exceeds the place in excellence - he is polite, friendly, smart and accommodating. We enjoyed meeting him briefly during our stay... a very pleasant host indeed!
Choosing this place for your stay in Oslo is a no-brainer. You can and should do so with no hesitation whatsoever!