Line's apartment is just off Solli Place, so it is really convenient for busses and trams, and just a 10 minute walk to National Theatre and the Metro or mainline railway for the airport. There are plenty of restaurants, supermarkets and cafés close by., as well as being about 10 minutes from Aker Brygge.
The apartment itself is on the 4th floor, and there is an elevator. The kitchen is well appointed with everything that you need with a large fridge freezer as well. The bedroom has a double bed and an ensuite bathroom with sufficient storage and ventilation. The lounge is very comfortable with a good TV and viewing services.
Entry to the apartment block is secure, and there were no disturbances in the building. There is good quality WiFi in the apartment as well
Line is a great host, and answered any questions I had immediately. I would certainly stay again next time I am in Oslo.