France
There are a lot of retreats in France. This page is a work in progress! Please get in touch if you have been to one you recommend.
Chez Castillon
I've seen people raving on X/Twitter about this retreat which looks amazing and gets great reviews. They offer taught courses and pure retreats.
Accommodation, food and coffee provided.
Nearest airport is Bordeaux or Bergerac.
Very reasonably priced and very high on my wish list.
Read more here.
Paris Writers Retreat: Rohm Literary Retreats and Courses
These courses run twice a year in May and October in beautiful Paris and look brilliant. They are hosted by a literary agent. Scholarships are available to apply for although there aren't details about what the criteria for these are.
The course runs for five days.
Breakfast is included but not accommodation.
The testimonials are great and make this very high on my wish list.
Read more here.