Oslo is expensive. Jo's place was a decent value and the location is perfect for exploring. We were within walking distance of 5 fantastic museums, but the house is on a very quiet, picturesc street. It is also only about 2 blocks from the bus stop in front of the Folk Museum and public transportation in Oslo is so pleasant, clean and easy to use (get the app!). Jo was very helpful explaining the buses and suggested good places to eat the night we got in.
The aparetment was simple, but had all we needed. Beds, including foldouts, were comfortable and all 4 of us had plenty of room. There was some construction/rennovation going on. There was not any noise from it, but you could see some work was being done to the front of the house around the entry. When we arrived we just knocked on the front door of the main house and Jo showed us the apartment and got us a key. It was all very easy.