I just spent an amazing week at Otter Bar and recommend it highly. It's a kayak school for people who want to learn, fine-tune, or challenge themselves on the river, and the staff is equally adept at teaching the basics to timid newbies as they are refining the skills of advanced whitewater paddlers.
The lodge itself is nice, meticulously maintained, and comfortable. Most rooms have their own bathrooms, while a couple rooms share... no big deal. I shared a bathroom and never gave it a second thought. The equipment is great, and there's a huge variety of kayaks to try... and the staff was very accommodating when people wanted to try out different boats. Meals were terrific, and the chefs went out of their way to offer delicious alternatives to anyone who had dietary requests. Everything was marked, as needed, to indicate whether it was gluten-free, vegan, dairy free, etc. Everyone ate together and shared stories -- I met some wonderful people with whom I hope to stay in touch. All likeminded, enthusiastic about spending a week on the water.
The instruction was superb. We had one instructor per three participants and the instructors rotated between groups, so everyone gets the benefit of each instructor's style. I learned a ton from each of them. The point, as they explained it, wasn't to barrel down the river and "run the rapids", it was to do it well -- with precision, control, true skills. They were patient when they needed to be, and encouraging... and never ever made anyone feel silly or intimidated. The instructors really stood out in my experience with prior lessons at other places. Top notch. Andy, Sophie, Scott -- all first-rate, super experienced, deeply technical kayakers who can also teach (and they're all fun, by the way, really great people).
The schedule each day was simple: breakfast (all together), a "chalk talk" to learn some new skills like how to read the rapids, then paddling on the river. The first day was spent on the pond right in front of the lodge, fine-tuning strokes and starting rolling. After paddling there were snacks at the lodge, free-time to explore, swim, etc., then a group dinner. Fantastic food prepared by hand by their trained chefs. We ate well. :)
No need to bring anything fancy -- we lived in shorts, t-shirts, flip-flops, bathing suits, ... super casual.
Also impressive was the way Peter and Kristy have built the lodge -- generates its own power, totally off-the-grid.
All in all a great experience and I can't wait to go back.