Commercial condo - tenant wants owner to pay for routine cleaning

[Manish A.]

Hello!

I own a 1600 sq ft commercial condo in a 5 story medical building which is rented.  For years the condo fee (which I pay) has covered the cleaning of the interior of the condo, which was 5 days a week.  Starting next month the condo association will no longer provide this service and the cleaners will only service the common areas.  The tenant (doctor), who is new and has only been there for a month, has hinted that he feels I should continue to provide this service at my expense.  

I reviewed the original contract, and there is nothing in there addressing this subject.  I personally do not feel routine cleaning should fall on the owner.  

I apologize if this seems like a rudimentary question.  This is the only property I own and am not the most experienced at this.  Any thoughts on how to best address this?

Thanks!