A TV needs to be amoritized over several years, check with your tax guy for how long in Ohio. Same thing goes for the sheets, mattress, furniture, etc that you use exclusively for the business that will outlast a single year's use.
You can write off the percentage of square feet of the total house used exclusively for Airbnb as it relates to all the household expenses. So for instance, if you are renting a 12' x 12' bedroom and that comes out to to be 10% of your total household square footage, you can write off 10% of the electric, gas, property taxes, mortgage, cable, internet, etc. If they have a private bath, you can add % of the water, but if the bath is shared, no go.
If you provide breakfast, you can write off all costs for groceries as long as you keep receipts specifically for the guest consumption. That means, if you share a box of cereal and the milk with your guest, you can't write the entire thing off. Same thing goes with that pot of coffee. Then it comes down to a calculation of expenses over how many days vs people sharing the space... you're tax guy, if he's great, should be able to help you here.
Same thing goes for toilet paper, paper towels, cleaners.... if you keep separate supplies for the business and for personal, this is easy. If you hire a cleaner to do the work, and you want to write off their services, you need to make sure to file a 1099 for them and the amount you paid them to do the cleaning. They are responsible for filing the income taxes.
Please note that I am NOT an accountant or tax expert, you should consult with one to make sure what I've said is legit - because I'm not always right. I just REALLY like numbers and puzzles and tax law is just that in spades.
