Hello my name is Francesco and I love Marathon and sport. I like travel and know different people.
Instead of Francesco: his son was my guest, (I knew before his son was gonna come, so it wasn't a surprice his son showed up instead of Francesco.
I would not recommand his son as guest in your house.
But off course I don't know about Francesco himself, I think he will be a respectful guest since he is also a host so he will know how it works if someone is using your place..