Great location inside old city, handy for train station. Diana is an annex to San Martino hotel up the street. So reception, and breakfast, if you take it, is there. The annex is secure and has rooms only on bottom floor of a building. Others above are apartments, so noise is an issue. Gosh but Italians to like be loud!
But being inside the city traffic noise not an issue at all. But earplugs helped. Don't do Italy without them!
Room decor is simple but vibrant & funky with retro furniture touches and artwork chalked on the walls. No aircon until 'summer' starts but large ceilings, cool walls and floors kept the room reasonable. Staff super friendly and helpful. Kept luggage for us all day in a little room. Breakfast looked great, shame we didn't take it but had too little time... Lucca a great place to explore...