Stayed a single night at Barish's place while traveling through Oslo. Everything was great. The location is a bit outside the city centre, but has plenty of coffee shops and restaurants around. If the weather is nice, I recommend walking to the city centre along Aker river rather than taking the bus.
I needed to do laundry there and the place has washing machines in the basement, but no dryers. Due to my short stay, Barish offered to do it his own apartment (next door), in a combined washer-dryer.