or it would be better to wait until the interest rates go higher, find a better deal, and refinance when the rates decreased in the future?

@Bien Nguyen - Having compared what airdna reports for revenue vs what our properties are generating here is what we found:--airdna doesn't differentiate between blocking calendar for maintenance or personal use and a revenue generating rental--same with discounts for weekly and monthly and one offs.So in most of our properties it is inflated by 10pct but in others where we do month and longer rentals it's inflated 30sh pct.Also - the projections are based on historical data and in many markets due to competition it is decreasing....not all markets but many.

If even raising your ADR by $1 with no decrease in your occupancy, it's paid for itself and a bit more.

Or are there ways to decrease a mortgage like that?

---> Given the local demand in your market, do you think demand for your properties will increase or decrease?

Think about it the other way, what if the property decreases in value? 

Sorry for my typo in the original question, when I said people take for granted that prices will go DOWN when rates decrease, I meant UP.  

There are lots of people who make money in products that the demand is decreasing for.

If as I think it is to decrease your costs a couple of policies I would implement even if you decide not to go with coin op.

Consecutive, weekly price decreases are becoming common, as are the listed-delisted-listed action from listing agents.