I’m living more or less parttime at Bali due my occupation
With help from my Indonesian Badminton fellows and other with knowledge about Badminton courts-lanes-arena-hall there would be good to know about around on Bali, I think we should try to list it here with addresses and coordinates
One place I know, located in Denpassar, Sesetan
8 lanes primary double. Good ambiance, easy to drop in from street, and nearly always someone who need a stand in 
open from 18 all week, players in all levels.
For a Scandinavian as me, it can be very hot in there 30-34C so double is just great
and drink like a camel some hours before !
Jalan Suwung Batan Kendal No.16
Denpasar Selatan, Kota Denpasar, Bali 80223, Indonesien
-8.712138, 115.222939