@Leatha3 We have hot tubs. We are also on a well, so we do not have to pay water costs. We empty, scrub out and refill the hot tub with fresh water for EVERY new guest. The hot tub is usually cleaned and refilling within the first hour of housekeeping arriving on site, and takes 6 hours to heat to a reasonable temperature. So, done by 11 or 12 and ready by 5 or 6 pm. Our guests are informed of this process so that their expectations are to enjoy the tub late in the evening of arrival or the next day. Our cleaning fee includes the expense of this sanitizing.
We found that by informing our guests of this process that we avoided the scam artists who attempted to claim for dirty water, rashes from chemicals, etc. The issue that you will have will be your ability to offer this level of service.