That was my best stay during my 2 weeks long round Italy trip. Flat was EXACTLY as described and even better. Very clean, comfy and cute. Private bath was perfect and clean as well.
You'll find a bus stop right in front of the doors, bus takes you to the city centre (btw, metro is also just 7 minutes by feet).
Davide was the most interested host I've ever met, he was very helpful, kind and polite, he instantly helped me to find places in the city satisfying my needs. He even helped me with a list of advices related to my following days in Amalfi, Pompeii and Naples (thank you!).
Breakfast was not only tasty, but also varied (toasts ,fresh juice, homemade honey and jam (yummy!), muesli and much more).
I would highly recommend Davide as a best host ever!