@Eileen124 I think that's really a decision every host has to make for themselves. You're quite right, no one really knows what's safe- it's a new virus and new research is coming out on a daily basis. Important to keep as informed as possible, using reputable medical and scientific info, not believe some youtube video or facebook comments.
It is supposedly safe to enter a house 24 hours after someone has been inside. It takes a few hours until droplets from breathing, speaking, couching, etc, settle on surfaces. Then you could go in with gloves, and whatever other protective gear you feel necessary and start cleaning and sterilizing.
I know they found covid on surfaces on that ship a few weeks later. But there wasn't enough information on that that I ever saw that made it clear why or whether the virus was actually still active or still had enough strength to actually infect anyone. And under certain conditions it lives longer- I've heard cold and humid are the optimal conditions, both of which would be the case on an uninhabited ship.
I host a home share and I'm certainly not going to start hosting again until I feel things are really safe again. Which may be years. Since you say you don't really need the money at this point, you are fortunate in that you can make a decision that isn't dependent on being financially desperate. And since it's a stand-alone house, you could get a long term tenant instead. (But I wouldn't use Airbnb for that)
BTW I'm sterilizing all the grocery packaging I bring home unless it's something that I can easily transfer into another container and toss the packaging. I'm on the "better safe than sorry" program. Seems like a big hassle at first, but I found it becomes a routine like any other. If they are things that don't require refrigeration and I don't need to use right away, I just leave in my car for a few days until the virus would be dead.