I think it depends on the context. If you are cohabiting with the guest (for example, an actual bed and breakfast), then it would be correct to say that you sh

I think it depends on the context. If you are cohabiting with the guest (for example, an actual bed and breakfast), then it would be correct to say that you share your home. If you give exclusive access to the guest, it would be more correct to say that you are renting, leasing, or subleasing your home.