The flat was good, a perfect base if you just need somewhere to sleep. Its located 15 minutes from the duomo and within walking distance of other attractions. One thing I would say is that you can hear people walking past or moving about upstairs so bring some earplugs if you're a light sleeper. Not sure as to why the cleaning cost is so high though.
Great host, helped me get some cash out when I couldn't use the ATMs and had a map ready for me to use.