I stayed at Pom & Tom's place for more than 3 months and had a really pleasant stay :)
The location is perfect : there are a few ways to walk to the city center, and good public transport. There is a supermarket and a gym 2 minutes away.
The place in itself is lovely, very quiet and private. You get your own room and may share a bathroom but it's really no issue. You get your own shelves in the kitchen/fridge/bathroom and there is also a lot of storage in the bedrooms.
The kitchen has everything you need for cooking and baking. Tea and other stuff on the table is free to get.
I'm very happy with my stay and will visit again when I come back to Oslo :)