We spent 5 nights at RIU Bambu, this was most certainly a memorable trip and we enjoyed our time there. We travelled with our 4.5 year old son, he enjoyed to the fullest, lots of choices for pools, depths that you can go for. Food experience was excellent at all the buffet cuisines they have, tons of options to pick from. Kulinarium was one of the gourmet restaurants, you have to book in advance, but it was average in our opinion. We never made it to the Palm Beach (steakhouse) restaurant, they need reservations, it was always busy and everyday there was a big lineup.
All the sport activities were very good, beautiful private beach, nice waterpark, and 24hr doctor!
Highly recommend for families with small kids.