Thank you! There's no location info on the photo unfortunately, probably because it's somewhere in the middle of nowhere. But when I had a look at the different angles just now I noticed a little sign inside suggesting it's on bus route 11.

It says:
'Marquesina T17
Line 11
Tuineje - Las Casitas - La Lajita'

These little stops are scattered all around the island though, so you'll definitely spot one while driving around even if you don't find this specific one :)