Hello,
we spent 4 nights in Eli's apartment and enjoy the time with the family (4 people) over Xmas.
Very charming apartment, we really felt at home. One key point was the unobstructed view which is great especially in winter :)
Walking distance to the city center and great places in Oslo such as parks.
In short, we strongly recommend this apartment.
Cheers,
Marie-Laure & Pascal