The apartment's location is pretty good, literally next to the subway (but be aware that there is only one train every 17 minutes).
The apartment could be cleaner (there was some mold in the bathroom, the mattress had a lot of stains, it seems the fridge hasn't been cleaned in a while as the freezer was covered in ice).
The worst was the AC outside unit which was COVERED in dust and perhaps never professionally cleaned which is a real health hazard and I would advise the host to take care of it ASAP.
The kitchen wasn't equipped very well.
Besides the already stated flaws, I had an ok stay in the apartment.