Have you already traveled? I see this post is from last summer. We just booked the Hyatt Bali Sanur and they had a great family deal. They will give you 50% off the adjoining room. I actually just called the hotel direct and got the cheapest deal that I had seen online. They will also give you a deal if you have been there before or if you are a Hyatt Passport member. (Of which we are neither.) There are great photos on Trip Advisor.
Thanks for your help. Have a great Bali holiday!