Wonderful apartment for one or two guests.
I found anything I needed in the apartment - the small kitchen area has everything (a lot of plates, bowls, glasses, couple of pans, teapot, coffeepot), a lot of necessary stuff in the shower (warm floor! I really glad that I had it in cold and rainy days), really comfortable sofa, warm blankets, soft pillows. I didn't use TV very much, but I spent couple of evenings with wonderful books about Norway and art, which I found in the apartment.
The area is also really nice: a lot of parks, the river, nice cafes, shops, grocery stores, 10-15 min by walk to the city center - I almost didn't use public transport to get to main attractions of the city. Highly recommend Beierbrua bridge -it's not far from the apartment and it's really nice place.
Check-in and check-out were really easy - Mona was so kind, that let me check-in earlier for couple of hours. The communication was great: she is really caring host, explained me everything and gave couple of good tips.
I definitely recommend this apartment as a nice place to stay in Oslo.