landlord/ renter question regarding changing carpet to WVF

[Bruce Umeck]

Family has 2br 2bth condo in over 55 community.  Renters have been in unit for 3.5 yrs- very good tenants - now on month to month.   I called this week to set up date for carpet cleaner to do the unit.  ( carpet is 4 yrs old so want to do preventive cleaning. no charge to tenant)  Tenant wants to get vinyl wood flooring instead and says she will pay for herse lf.  

Has anybody run into a problem letting the renter pay for new floors?

Since this is a condo I checked with the HOA and they said it is all on me since i own it.

 I have not raised rent in 3.5 years so is she doing this so i won't raise the rent. ( retired couple who has the bills paid by their daughter)

Thank you for any input