> I also understand the hesitancy to pay for two months at a “retreat-like inpatient psychiatric facility.”

> In publicly funded system, it’s likely facilities like this would not exist or would be strictly private pay.

In France, 80% is paid by the public healthcare if a psychiatrist greenlit you, which still make you liable for ~30€ per day in a room you share with another patient (and if you want a private room it's ~90€/day out of pocket) (maybe the prices around Paris are a bit higher though, i'm a country boy)

[edit] more accurate numbers, i had to check and correct them. Also, 30€ per day also covers medication if needed and a spa session