I can not say for sure but I have seen the pool at AKL and the ones at the Allstars and they look nice and warm
We were at the ASMU a few years back and it was in the low 40s to teens for most of the week we were there and we would walk by the pools in the am & pm and there were a hand full swiming.
It look fun but the hard part would be geting out and going to your room brrrrrrrrr.