We stayed in Lucas apartment for two nights and we loved it. Especially the view to the Duomo! It's amazing and in best location.
The apartment is tiny but for two people really big enough, very clean and cozy. There's also a coffee machine available, so we enyoied our morning coffee on the terrace. This terrace is not exclusive which means that it could be that it's used by other people from the house. But this was no problem, because it's really big.
We really recommend the stay in this unique apartment!!!