Ahhh....A beach house on the Ruby sea. I think he's too enamored by the world to completely go back to living under the ocean, but the best of both worlds would be on the beach. Somewhere that allows him to bask on the sand and still go and swim like he always used to. I can imagine he'd like it to be a combination of Doman(ish, closest to sui no sato) and Ishgardian furniture, since Ishgard /has/ become a place hes gotten quite comfortable living in and being used to, despite the rough start. I dont think beach houses have to necessarily "look" a certain ways, but yknow...still the kind of comfy vibes they bring. Probably a medium in size enough to have different areas in the house such as an office/ or maybe even an indoor garden!