A secluded bungalow with a quiet bunch of people is safest. I have used bungalows many times for couple only. I find it much safer and more private than a hotel or a resort.
My suggestions:
1. Recce a couple of bungalows, understand the place, it's seclusion, it's staff etc. Stay there once, stag. You need staff to cooperate. Or get a place without caretaker. Get at least as many bedrooms as there are guys.
2. Have a close knit group of people you can trust. Say 4-5ppl, not 10-15. Ensure you don't have any bad apples who will go crazy after a peg or two.
3. Don't announce your party here, do it in private channel like WhatsApp .
4. Don't have a noisy party. Don't take stuff that could ensure a long jail term, like narcs.
5. Do this on a working weekday. There will be no neighbours. You can even do stuff on your balcony.
HTH
Amp