Under ORC 5321.04(8), the landord must
Except in the case of emergency or if it is impracticable to do so,
give the tenant reasonable notice of the landlord's intent to enter
and enter only at reasonable times. Twenty-four hours is presumed to
be a reasonable notice in the absence of evidence to the contrary.
In case of a violation of landlord obligations such as this, under 5321.07(A),
the tenant may give notice in writing to the landlord, specifying the
acts, omissions, or code violations that constitute noncompliance. The
notice shall be sent to the person or place where rent is normally
and then (B) specifies that
If a landlord receives the notice described in division (A) of this
section and after receipt of the notice fails to remedy the condition
within a reasonable time considering the severity of the condition and
the time necessary to remedy it, or within thirty days, whichever is
sooner, and if the tenant is current in rent payments due under the
rental agreement, the tenant may do one of the following
followed by options to terminate the lease, seek a court order to remedy the condition, or "Deposit all rent that is due and thereafter becomes due the landlord with the clerk of the municipal or county court having jurisdiction in the territory in which the residential premises are located" (there is no indication what happens to that money). On the face of it, your only remedy is to terminate the lease, since it is impossible to change the past-tense fact that the landlord gave less than 24 hours notification.
None of the 14 cases to hit the Ohio Supreme Court regarding ORC 5321.04 have pertained to the advance notice requirement. I would guess that if you were to pursue a court order for a remedy that the most you could hope for would be an injunction requiring them to wait at least 24 hours until effecting the repair.
There is no requirement that you be given notice that the work was done.