If you're looking for a day away from your house rental, agood starting point would be the Belau National Museum & Bai which houses beautiful artefacts of Palauan life as well as traces of colonial occupation.
Airai Bai is the island's oldest men's meeting house, located in the scenic village of Airai. Once inside, look out for the mythical money bird and other intriguing motifs that dot the interiors.
Palau and Micronesia's legends and fables come to life at the Etpison Museum in Koror. A must if you enjoy ancient rock art and navigational artefacts.