Personally, I don't like it. I do allow them to have Amazon parcels delivered (within reason) and also food deliveries, but using my address for any official purposes (bank accounts, credit cards, social security etc. etc.) is an absolute no no for me.
@Luisa169 They should have their mail delivered to a PO Box at your local post office. If the Post Office needs to have an address of record, the guest can use the address of their nearest relative or emergency contact person. NEVER your address.