I'll give you my direct experience with variance.
1) I paid $141,000 (foreclosure). My property tax is $1,700 per year in the municipality of Vega Alta.
2) I was in P.R. about 10 days per month this Jan, February, and March and my bill ONLY were about $20 per month!!! Why that cheap, I don't know. I don't run my AC much too, and I had "cutting edge," brand new Fujitsu ACs (five of them) with inverters and WiFi connection. My penthouse is 2,200 sq ft, but I do get a great ocean breeze - I'm on the top floor/5th facing north towards the ocean bordering Dorado - Ritz Carlton is 2 miles east of me. Maybe $100/month full-time AC bill for a month WITH high SEER. Mine at about 19 SEER. Don't forget to also check EER to do a comparison. Let me know if you need an AC contact. I went through Costco AC contractor.
3) I have ZERO interaction with the PR government of any kind for my soon-to-be AIRBNB penthouse. I tried.
4) Another method is to try to get your hands on any of the HOA condo/gated house rules to be 100% sure you can't be stopped. You'll be very upset if you buy a home in a gated community, and find out the gated community MIGHT have rules against AIRBNB.
5) I recommend you look "way" beyond utilities and perform a return on investment model to focus on how the paid ratio (what you pay for your unit) to AIRBNB rate first. The less you pay for your house, the quicker, and better, you can make a profit. Here's a case study: If you buy a $200K home, and if you get $249/night - used AIRDNA to get your daily rate average - and other research, if you rent about 50% of the year (utilization rate), you could get ALL your money back, $200K, in about 6 years and thereafter "gravy" plus IRS publication 527 "benefits"/write-offs.
FYI: I used home path site for two years before I found/bought my unit. It will also retirement place in about 10 years.