Me and my boyfriend stayed in Annichien's apt just for One night.
She's very gentle (she prepared our breakfast in the kitchen with background music and she took any advice to visit Oslo) and the apt is very clean. The room is gracious and the bed is comfortable. The building is old but the interior is nice
The bathroom is small but clean.
It' not so far by walk to the city center (15 minutes) but there's the bus or the tram you can take .