We loved our stay at Thomas' place!
Communication was great (he gave all the necessary tips to arrive, and arranged a practical way for us to get the key), and the location was super convenient (about 5 tram stations from downtown Oslo).
The flat - a basement area, completely separated from the house - was really big and had everything we needed for our short stay. The beddings, towels, and the whole place were super clean, the kitchen utensils easy to find and in great condition, the heating system working perfectly fine. There was a good Wi-Fi connection, a comfortable and large bed, a kettle, and a well-functioning heating system.
We can only recommend it!