The Landlord can only charge you for a depreciated amount.I don't know the whole story, but it sounds like maybe you shouldn't do anything.

Too many stories of how the buyer lost their cash in the deal and the deed was forced back to the owner, should the owner hire a crafty attorney and charge you with fraud, misleading the seller, blablabla all non-sense, and all solved by only doing creative deals where the owner/occupants move out prioor to closing.If I guess corrrectly; this guy is a nut, wishful thinking and you should make a written offer,  based on him moving out prior to closing.  

Then, you can use co-hosting which s/he will take care of the daily operation and charge 20-25% per booking.

Most agents charge 1/3 of that for commission and agree to split that with whoever brings the buyer.  

The landlord was charging the tenants to pay all utilities, which I never do.

You have to make sure to double and triple-check the SOW that you sign off on with your contractor.Even though you know you talked about something being included in a certain price, if it's not on there, they will charge you extra based on it not being on what was signed off on.

I also set up the LLC and am in charge of all tracking, accounting, checking vendor work, tenant relations, two how’s, etc. he sends the money and bills and I do the rest.

You may in fact be responsible for rent until the landlord can re-rent the unit, but the landlord also doesn't get to "double dip" (charge you 3 months rent if s/he rents it out in a month).In practical terms, you may have some leverage as far as mutually agreeing to end the lease, vs. forcing the landlord to evict you to regain possession of the unit, especially in the current environment when the eviction courts are quite backed up.I'm definitely not a lawyer, and you're asking a legal question, so I would urge you to consult one on this.

Tenant does not want to pay utility charges till statement shows her date of occupancy.

Have a plan for your charges, making on time payments, and paying the balance off within a quick amount of time to avoid costly finance charges.