Elsebeth was a very warm and welcoming host. She was always quick to reply to any questions which we emailed her. Her flat is just a few minutes walk away from the metro station which takes you to Oslo city. The only downside is that you can't go directly to Bygdoy island (where all the museums are), you need to go into Oslo city and catch a bus back to the island which takes an hour.
The flat itself was very lovely, an annexe attached to Elsebeth's house and separated by a locked door. The bathroom was modern and we enjoyed quite a few soaks in the bathtub. Shower is also very nice.
The kitchenette was enough for us to cook breakfast every morning. Big fridge for us to store milk, fruit and snacks.
The bed would be okay for one person, but not so great for two. The mattress curls up at the edges so the bed doesn't lay flat and made it a bit uncomfortable on the back. Other than that, the flat was warm, cozy and comfortable.
Would recommend, especially for summer hikes around the local area.