Torstein's apartment is very cozy and matched the pictures shown on the booking pages. There were lots of things including a printer by which I printed my boarding pass instead of finding a printing shop (what a surprise!). The most exciting part, personally, was the kitchen where I found all the seasonings and cookers I needed, and I even didn't use them all coz it was so all round! Apart from the apartment, the location is very good (12-min walk from Oslo S). And it was very peaceful and private but I can do grocery shopping just downstairs.
Torstein is a very kind and nice host. He left an introduction about his apartment on the table and a welcome chocolate! I felt I didn't need to contact him for more information like how to use electronics in the place.
Overall, I do love it and strongly recommend staying at this apartment when people travel to Oslo!