I disagree with premise the repairs for tenant caused damages are not deductible following conversion to personal use. I refer to page 18 of Pub 527 - "For purposes of determining whether a dwelling unit was used as a home, you may not have to count days you used the property as your main home before or after renting it or offering it for rent as days of personal use. Don’t count them as days of personal use
if:
• You rented or tried to rent the property for 12 or more consecutive months, or
• You rented or tried to rent the property for a period of less than 12 consecutive months and the period ended because you sold or exchanged the property."
Provided the property was rented for at least 12 months, it appears that you dont have to treat the remainder of the year as personal use for purposes of restoring damage caused during tenancy period
