Substantial services include cleaning in-between rentals, changing linens, etc. According to the IRS, income filed on Schedule C.
Schedule C (Form 1040), Profit or Loss From Business Generally, Schedule C is used when you provide substantial services in conjunction with the property or the rental is part of a trade or business as a real estate dealer. Providing substantial services. If you provide substantial services that are primarily for your tenant's convenience, such as regular cleaning, changing linen, or maid service, you report your rental income and expenses on Schedule C.
