I used to stay at Ola Grande with my parents years ago and they still go there every year for 4 or 5 weeks in May. I have 3 boys now aged 7,8 and 11 and we took them there for the first time 2 years ago and went again this year, returning last week, and they absolutely love this place! We also got married this time on Cocoa Beach so this place is very special to us.
For the children Ola Grande was perfect. We virtually had the pool to ourselves for the 3 weeks we were there and it is such a quiet place yet perfect being right on the beach as well. There is a little bit of noise in the evnings from the pier but once you are in your apartment you don't really hear it. I would be more than happy to go to Cocoa Beach every year for our holidays and would go to Ola Grande every time.