I stayed in #22. Very close to the dive center, and couldn't hear them starting up the compressors in the morning. And, close enough so you can get to the room and back during short boat stops between the AM and PM dives. But, a long walk to the dining room.
After a week, I still got lost looking for my room, no matter how little or much alcohol I consumed ;-). With #23 on the main road to the dive center, made it a bit easier, but I never did figure out how to navigate within the grounds. Then again, my underwater navigation isn't all the great either.
I found the rooms to be plenty big for two. We had two double beds. We stored most of our gear in the bins in the dive locker - bring a small lock of your own if want, but the equipment shed is locked at nights - and the dive bags/luggage fit fine under the table. There a a few shelves in the closet, not great room but enough. There is in in room fridge that they keep stocked, as well as a small safe.
We had a coffee maker in the room; if there's not one there, just ask. And, whenever we ran out of beer in the room fridge, ask any of the staff to refill for you. We ran out often!
We were there in November, 2007 - no problems with dinner reservations in the "full service" restaurants; although many in our group found the steak house to be very lacking. There was always plenty of room with no waiting in the large dining room. We found the buffets to be very good, nice selection, good food.
As to the nightly shows, it may be your thing, maybe not; but I did almost split a gut laughing at the "Mr. Iberostar" show. Caution about "volunteering".
If you do get tired of the buffets, Alberto's, a short walk on the sand behind the dive shack, has great fresh lobster - not inexpensive, especially since you're in an all inclusive, but, it is a change.
And, like Dave said, don't loose our towel card.
You'll had a great time.
