We were there last month, and while the cranes (we saw 4 of them the days we were there) weren't a huge deal, it was a bit of an eyesore. But I agree with the previous post - the cranes were only there to hold people - getting them to the balconies and roofline for sanding and painting and cleaning. So it wasn't noisy or anything like that. Part of me was a little selfish wanting them to not be there - but I do understand it's necessary sometimes to maintain the beautiful exteriors they have at AKL. I don't know for sure, but perhaps by April they'll be done with the work around the pool and you won't need to worry at all!
Have a great trip at our favorite resort!!