Great report, although i was very disturbed by the poor maintenance at Amanwana - I have never experienced anything like that in all the years of staying there. It does suffer from weather damage, so they have to refresh it every season, but from your photos, it looks as though they missed a year. Worrying!
At Amanjiwo, the floors have always been 'cracked' ever since it opened under Francois Richli. Francois told me it was a mistake, but then Aman decided that the look was rather appropriate and I have to say that upon subsequent visits, it began to feel right. Shame Sean Flakelar was away as he adds a whole extra dimension to staying there.
At Amandari, the loud quacking noise at night, often sounding as though it is right by your ear or at least above you, is from a local species of ghecko. You also hear it at places like Four Seasons Tented Camp. Amazing that Aman moved the frogs for you!!
I am thrilled you enjoyed Amanusa - it is one of my favourites. I have no idea why it is less famous than the others as I agree that it is one of the most comfortable and best designed Amans in the region, and I also adore the beach club and all the details like the little fabric holders on the base of the wine glasses that stops them dripping. You also stayed in my favourite pool suite - the Amanusa Suite. Good decision.