I've rented high end houses furnished years ago for $2500 and have 4 groups interested in a current house ($250k range) at $1350.

Chapter 5313: LAND INSTALLMENT CONTRACTS5313.01 Land installment contract definitions.As used in Chapter 5313. of the Revised Code:5313.02 Required provisions of land installment contracts.5301.25 of the Revised Code and a copy of the contract to be delivered to the county auditor.5313.03 Biannual statements furnished to vendee.Every vendor under a land installment contract shall, at least once a year, or on demand of the vendee, but no more than twice a year, furnish a statement to the vendee showing the following:5313.04 Vendee to enforce chapter provisions.Upon the failure of any vendor to comply with Chapter 5313. of the Revised Code, the vendee may enforce such provisions in a municipal court, county court, or court of common pleas.

No part of the cost of the property may be furnished by the lessee or any other party except as follows: (1) A lessee may pay for an improvement that is readily removable without causing material damage to the leased property (i.e., a severable improvement), provided the property is not subject to a contract or option to purchase between the lessor and lessee at a price other than FMV at the time of purchase or sale.(2) A lessee may pay for an improvement that is not readily removable without causing material damage to the property (i.e., a nonseverable improvement), if the improvement is furnished to comply with governmental standards on health, safety, or the environment; and the improvement does not increase the productivity (or capacity) of the leased property to more than 125% of its productivity (or capacity) when first placed in service, or modify the leased property for a materially different use.

For example, on Zillow, if you mark the furnished option your search rating goes down exponentially VS. if you highlight the new kitchen in a suburb that can be a huge draw. 

Shoot for the Midterm which might be better and more consistent depending on the demand of the area, which you can check on Furnish Finders. 

Here is an article from a lawyer that relates to this issue, https://ronwebster.com/content/sale-furnished-prop...Good Luck! 

The two apartments feature one kitchen and two common rooms as well.My question is regarding furnishing the apartments.

If you ever hire tenants to do work, they sign an independent contractor agreement with a defined scope of work, furnish their own tools, and are paid for the work directly (no reduced rent).

It would be completely furnished.

(For stuff out in the open, like the drain grates, the missing grates is evidence enough.)All large appliances that are furnished with a property (and worth more than the deductible) should be on the landlord policy.