Location is great, around 5-10 min walk to the Duomo depending on your speed. Easy to get anywhere walking. Obviously with such a central location comes difficulty parking and driving but they have a deal with two parking garages so that's extremely helpful. If you're driving make sure you enter the road from the North - the GPS tries to make you enter from another direction through a road you're not allowed to enter - and make sure you take your bags out first at the property before parking as it's a bit of a walk with a lot of luggage.
The property is very well equipped, everything you need is there. The little terrace outside is lovely in the mornings and evenings to sip some coffee and enjoy the quiet. It can get a bit dark in the main living area and kitchen; if you dont mind opening the door into your living room and kitchen then it becomes bright (I only saw other people outside one time so it's not a huge invasion of privacy).
The mattress was soft, I prefer firm but that's just a personal choice. The cleanliness wasn't exactly up to my level of what I would call sparkling but I must admit I am really over the top in my cleanliness requirements, so I think for almost all people it's very clean indeed. The internet was a little slow but stable, so again I think for most people it would be fine.
Overall I would certainly recommend this place.