We stayed at Kayhan's place for two weeks to self-quarantine ourselves as part of the government requirements for international travellers.
The place is comfortable for 4-6 adults (three bedrooms, and one bathroom), and has most of the amenities that you need for a longer stay (washer, dryer, dishwasher, oven, etc.)
However, some of the amenities were not working (in our case the dishwasher and the bathroom heater), which was frustrating.
The building is also pretty old but well maintained. For example, it has a renovated bathroom, but very noisy stairs.
Plenty of natural light (windows on three sides of the building) and proximity to all the services is its great advantage. There is a backyard that we couldn't use since we stayed in the winter.
Finally, the most impressive part of Kayhan's place was the internet! It was 200Mbps internet access that was saved our lives (four professionals working remotely and two kids watching Netflix and Youtube at the same time!)
In general, with a few upgrades (like the dishwasher, and maybe some new dishes), it would be a great place to stay.