Wow, I’m surprised by the negative reviews.
I would totally book your trip at Poly and aim for June. I mean, they will be aching to open it up and get guests in, so I bet they’ll try and get that refurb done. Likely it mostly will be done. Or, at least the areas you will care about - the great ceremonial house, etc.
We are here right now and are LOVING it. Of course, it’s a weird time to travel, so we like it feeling empty and have been completely happy with our room and the atmosphere.
I will say the food offerings are fine, but not as good as usual. But that seems to be more of a COVID issue - some places closed, lots of mobile ordering, and that may or may not change depending on this virus next spring......but many places are closed on the entire property and they’d be subject to the virus as well. Same with some perks like watching fireworks from the beach area. Until restrictions are modified, lots of cool moments are not going to happen.
If you need the full of people Poly experience, you should book elsewhere. But if you are fine with the rest of the hotel being closed, I’d go.