The village has a variety of accommodation options. Cave style houses updated with modern features, cliff side houses that form a small hotel, mansions once owned by sea captains converted to luxury suites - are some of the unique features. Points to consider are if the accommodation faces to the sea, caldera and volcano; available terrace for breakfast or lounging, private terrace or shared; windows - as some of the cave houses may have small viewpoints; the location on the cliff as the stairs can be steep and not suited for everyone; and the regular factors: air conditioning, bathroom arrangement, bed style and comfort, services, etc. The protected village architecture and the cliffs restrict the building of swimming pools so there are very few offered on the caldera side. There's a public pool-bar offering views towards the sunset side of the island. If the accommodation has a terrace with the view to the sea, caldera and volcano then you won't miss the pool as gazing over the sea is the point here.
As of Sept 2005, no new hotels have been opened in Ia for a few years only new rooms / caves etc. are added to existing hotels, so you're unlikely to enjoy the benefits of a newly opened hotel, as described in Finding accommodation.
