I ended up finding the place on the Internet because my girlfriend has celiac disease and they were the first to give 100% assurance of non-contamination.
The welcome is practically perfect despite the fact that there is a shared entrance with the hotel of which it is part with the very kind concierge.
The dishes are really well made, from presentation to flavour, I recommend the deer meat. Cooked very well.
If that wasn't enough, the waiter Alessandro is top notch! From the welcome to the advice on wine, of which he is a true expert.