Apartment: it is very clean and cosy. Beds are comfortable. Heated bathroom floor was great. Kitchen was well equipped. (Fridge, oven, microwave, nespresso machine, and dish washer)
Location: closed to tram station, very central, walkable to so many places. 2-3 tram stops to Oslo Congress Center and central station. There are supermarkets closed by (Kiwi and Coop).
Host: Alex was a super nice host, very well communicated and quick response to all concerns.
Check in and check out were smooth.
I would recommend Alex's place to all guests visiting Oslo.