We stayed at Poly last month at 3908 Tokelau. It was a good view of the quite pool and you could see GF also. We had a 9 month old and the pool was great for her. She was able to crawl around in the zero entry area and take it at her own pace. We also noticed many other babies around the same age. It is a good resort for young kids.
They took out the play ground set and put in a water play area. This is good for kids who like that. But is lacking for kids who shouldn't get wet (on there way somewhere else ect...) Someone here at WDW magic sugested to hope on the monarail and use the play scape at Con.
The monorial is much easier then buses or boats, if you are using stollers. From most rooms it is eaiser to walk to TTC then take the Monrail all the way around.
The water show started at 9 every night when we were there. Let the kids stay up to wacth it. It is loud enough to wake them up in your room if the are already asleep.
One father I meet there discribed the water slide a bit like being flushed down a large toliet. I would have to agree.
You may already know this and it feels like I have said it before. (I really am not the complaining kind, but I just don't understand this.)
There is no hot tub at Poly.
All in all it is a wonderful magical resort and have a great trip. It is close enough to go back to the resort for naps and swims in the afternoon.