Lars is an excellent host - friendly, welcoming, personable, who keeps communication going and responds very promptly. He gave me detailed instructions regarding check in and check out, use of amenities, and was getting back immediately when I had a question or needed clarification. Even though we have not met in person, I feel as if we did because of him being available at all times.
Lars' apartment is in a perfect location - 5 min. walk from Oslo S (main train station); one block away from Karl Johan Gate (main street), you can walk to literally anywhere in Oslo from this spot - Opera house is less than 10 min walk, Aker Brygge is about 15-18 min walk, Vingeland park is about 45 min walk, Munch museum is about 25 min walk. There are cafes, restaurants, grocery stores within a few minutes walk as well.
The apartment itself is in a beautiful building (if you are instruction-challenged like myself, the 2 entrances to the building are from the street NOT from inside the court yard) that has elevators and also interesting architectural quirks. The private balcony is spacious and was a nice spot to hang out with a cup of coffee even in winter weather. The apartment was clean and had all the amenities necessary for comfortable stay - dishwasher, microwave, kitchen utilities, washing machine and TV (which I didn't use but they are there nevertheless), shower items, etc. Special plus is for excellent internet connection (I need to have easy online access for work, so it's an important factor for me.)
Overall, a great stay and will definitely use again when I am back to Oslo.