I was repeatedly told that Maupiti is a small Bora Bora and I do not believe that the island has actual hotels, let alone hotels from chains like Hilton.
Those "pensions" and other B&Bs are probably best if mosquitoes do not enjoy your body.

It seems that the most "upscale" place, to stay at, is the Maupiti Residence. Not the same standard as the Conrad, but it looks like their bikes are in better shape.
https://www.maupitiresidence.info/en/index.php