@Barbara2224,
The general public health guidelines are: 1) wash your hands with soap and water frequently, or if unavailable, use hand sanitizer ; 2) social distance at least six feet/two meters; 3) wear a facial mask when in an enclosed area, or when social distancing cannot be maintained.
Ask yourself: 1) will I be in closed quarters with the guests? if yes, you everyone needs a mask; 2) does our space have a ventilation system that will filter the indoor air? if no, everyone needs a mask; 3) will I be able to disinfect all items that we share with the guests? if no, you probably shouldn't home share.