Meh, the environment is clearly this one, without changes:
https://f95zone.to/threads/mediterranean-haven.181125/
Then playing dress-up and hair - okay, 30 mins.
Slapping a pose from some pose pack on top of that - another 5-10 mins)
Putting up HDRI as lightning source, putting up Key and Fill lights, if needed - it's, like, 10-15 mins maximum.
Setting up a camera and lens - 5-6 mins)
And with Jess being the only character shown, it probably took him 2 hours max to do everything. And that's rendering time included, even if it's 8k ULTRASUPERHD