It's a hut on the top of the mountain. No address, apart from the pass where it's built. On one side it's the Italian side of Matterhorn, on the other one it's Swiss. Being on a pass, it's very windy. Plus it's about 3500mt above sea, so you might have troubles sleeping for the air pressure. Bring pills for altitude diseases with you, and hope you enjoy a nice evening: the only solution would be going back home... which we do not mlike much... don't we?????