Rooms have decent space for a couple but might be slightly cramped with 4 people

The Mill Suite has its own two-person hot tub. I don't recall seeing any other. As for things to see, the staff set us up with an all-day bus tour that visits the ruins of prehistoric Thira (worth seeing), takes you to a few other great sights for photographs and some local history, stops by the Santos Winery (samples included), and then up to Oia to tour the town (there are a number of interesting shops) and watch the sunset. We also took a boat trip to the volcano. It was a bit of a hike, but was interesting to see, although don't expect a caldera with lava, it is more like a deep hole with a few plumes of smoke coming out, but the rock formations were interesting to see.

Hola Patricia. El Hotel no está sobre la playa ni cerca de ella.Está ubicado en lugar alto llamado "La Caldera" que tiene una vista extraordinaria. El acceso al Hotel es todo por escaleras que suben y bajan.

I went in July and the pool was super cold, but it felt amazing after walking around in hot weather. I believe it’s hot around May. Unfortunately i doubt the pool is heated. Have fun

Yes...