Understand the tax breaks, and this is slightly off topic (my apologies), but I would make note of the liability.
Wouldn't someone be able to sue you directly with an LLC?
I put the property under it's own S-Corp. The car wash in another S-Corp and any other business on the property in their own S-Corp. To my understanding, if someone tries to sue one of the companies (such as the carwash), they can't touch the property, me personally or any of the other companies. If they won, I'd just start another and move on with minimal loss.
With all these S-Corps (pass through for taxes), everything is a write off. Living expenses are included and you get draws.
Maybe it varies by state, but here in Florida I don't need to offer employee benefits or health insurance as I'm too small.
Since living expenses were through one company, that is the one filed for SBA PPP.
As I'm thinking and writing this, maybe have just the property under an S-Corp and the running business as an LLC would work. All the car wash equipment is considered real estate and the LLC would just manage the day to day operations.
Corporations also have shares which ensure ownership. Helps a lot if you need to create a trust which avoids probate.