My husband and 11 year old daughter and I stayed for 4 nights in TK's place in Oslo. The location is near to the train station and walking distance to many restaurants and public transportation. TK was very helpful in directing us to public transport to explore Oslo. His apartment is very clean and he shared his kitchen and pantry with us, allowing us to make meals there. We had plenty of space in the larger bedroom for the three of us and the beds were very comfortable.
He does live on the top floor of the building and the many stairs could be difficult for some people. TK is like a mountain goat (he is very accustomed to these stairs) and helped us carry our baggage up the stairs when we arrived.
We enjoyed conversations with TK. He is completing a PhD in political philosophy and has had many interesting adventures in Central and South America. I highly recommend this host.