I think it's Jep's restaurant if you search on Google maps. Same railing, same trees.
it is my site :) I was actually looking those waterfall scenes last night, and I'm pretty sure it is Erawan, but I was trying to find the exact level out of the 7 before listing it for full confirmation.
More to come once more eps air
https://blscene.com/where-was-the-heart-killers-filmed/
https://blscene.com/where-was-perfect-10-liners-filmed/
https://blscene.com/where-was-ticket-to-heaven-filmed/
https://blscene.com/where-was-the-sign-filmed/
https://blscene.com/where-was-sunsetxvibes-filmed/
I've found the beaches they went to. 👀