The flat is perfect location, very central, which enabled us to walk to every shop, every cafe, every church and the non-open roof top bar with ease! Walk to the Museum of Modern Art, the Michelangelo angel sculptures, the organ as played on by Mozart and take breakfast at EATALY is my advice!The airport is close enough to enable a taxi for roughly 16 Euros for 2 people, which is a similar price to the bus, so worth doing.
It was very clean and had everything that we needed including a great mobile Wifi system, hair dryer and air conditioning! When we had a minor problem, Massimo answered immediately.
It is up at least 8 flights of stairs but that is not a problem at all and Massimo has listed this, just don't take anyone with mobility challenges!