The apartment is great for a short stay in Oslo. It's located in a "suburban" area - so you don't feel like you live in a concrete jungle. The apartment is below the hosts' house - so you share an entrance hall and washing room. The host is very nice and easy to live along with - communication was very simple and effective.
The apartment itself has everything one would need for a stay - an oven, hotplates and kitchen supplies. The bathroom is ok. It's a quiet area so no problems sleeping or being woken up by the noise. Otherwise, you see what you get from the pictures.
Location wise this is perfect - it takes about 30 minutes to walk to the city centre - but shorter for a lot of other locations like Majorstua, Adamstuen, Blindern or Bislett.
I really enjoyed my stay here and would recommend it to others.