Helene's apartment was very nice and, as a couple, we really enjoyed our 6-day stay there. The flat is very convenient for public transport, only 20 minutes by tram or bus to Oslo city centre. It is also close to Akerselva, a lovely river running from NE Oslo to the Oslofjord, great for walking along.
Helene was very communicative and gave us detailed directions and information about the flat and the local area. I thoroughly recommend her for a great stay in Oslo!