I don't even know where to begin.. we visited several cities in Italy and stayed in several airbnbs... this was the BEST. This was the ABSOLUTE BEST airbnb that I've ever stayed in. The Muretto has a serious "Night in the museum" vibe. An ancient wall, little exhibits nestled everywhere and they're all documented. The WiFi is blazing fast. The A/C actually cools the entire place. There's an exhaust fan in the bathroom (this may seem like a small thing but exhaust fans are almost unknown in Italy). The house is very well designed and every detail is so well thought out. The shower is the best ever and even has a colored light system, soaps and shampoo. You'll be able to wash and dry your clothes too - there's a washer and dryer beside the bathroom, along with irons, detergent, etc...
It's very close to the subway. On the way to the subway, there's a small shop to get coffee and pastries or whatever. Marco's extensive documentation includes maps and restaurant recommendations (YUM!) and everything else you need to know. The documentation is incredibly well done and helpful. If you need it, Marco has thought of it.
There are so many great things about this place that it would take all night for me to list them all, I highly recommend!