I used to keep my old mare there many years before Becky Chapman became a RWYM instructor.
Cant comment on what its like up there now but can say that Beckys stable management was always second to none.
As far as I know there is only Becky instructing there.
You might get more response on the Intelligent Horsemanship forum as there a lot of Becky followers on there. You can also google her website and look at the testimonials.
YES, do it. We've been going to Becky off and on for years, and I highly recommend her. She's a born teacher, and she really knows her stuff. I've done short courses, independent lessons, lessons on Strider (recommended) and left my horse for a month, during which she sorted out some problems and also helped me re-establish my working relationship with my horse after a long illness (mine) had seriously undermined us. She's one of the two best riding instructors I've had. Don't go if you want same-old, same-old, though.
Depends what you want to achieve from your stay/course? There are a lot of good centres in this part of the country and also wilts way - not necessarily part of the intelligent horsemanship franchise (altho i beleive ashen is independent)
I have trained with Becky for years and she is absolutely one of a kind. She has nothing to do with intelligent horsemanship and never has as far as I know. She has many qualifications including BHS, senior RWYM instructor and Excels in biomechanics of both horse and rider. She has recently been accepted as one of only a handful of people to train with Phillipe Karl. Her uniquiness lays in her ability to explain what to do within yourself to make the horse change his way. Biomechanically you want the horse to stay sound for as many years as you have him. I have tried more local people to me... but always end up thinking the journey is worth it.
I can highly recommend the 4 day courses. Somehow they just seem to work I think its how your brain processes each night. Not sure but the difference between day 1 and 4 is always profound.
I have been thinking of going there for a course first on strider (the mechanical 'horse') and then maybe on a four day course because I really want to crack my jumping nerves on my new horse.
I had been recommended Becky's yard by another H&H forum member and will be going along with them to watch their demonstation.
If it is to do with confidence and nerves (like me!) the same forum member recommended a book by Mary Wanless called 'Ride with your mind' and it is the most fab book and really makes a lot of sense.
I would give it a whirl, it looks a fantastic yard and I have heard many good things about it. Have a good look on the intelligent horsemanship website as recommended above.