Private Swim Instructor for Lessons at Home

We're looking for a private swim instructor to come to our home in El Cerrito and help our kids (8 years old, very comfortable in the water) learn to swim. We have an in-ground pool with heater and would like our kids to learn water safety as well as basic strokes. I haven't found much on BPN for private swim instructors and was hoping to get a recommendation here. I'm also wondering if anyone has any experience with Sunsational Swim School, as a student, a teacher, or a customer. Hoping to get this lined up for May if possible. Thank you!