to me, grace's house on erid looks like it was inspired by organic modern/japandi interior design styles with industrial elements. which makes sense from a set designer's stand point because it has to look like it was made with both natural materials and metals.
but i have so many questions about it. is this grace's interior design style? is this how interior design is on erid? did grace and rocky set up a joint pinboard and spend the trip chucking jpegs in there? he has so many vases, are they gifts from the eridians? is it an eridian cultural thing? did grace take up pottery?
i also adore how many windows he has and how big they are. the house is physically small (which makes sense, grace doesn't seem like the type of guy to want a bigger space than he needs) but having so many large windows makes it feel bigger than it is. it also allows him to enjoy the ocean views, provide lighting (it's possible he has recessed lighting, but i didn't see any lamps), and help him feel less trapped. after being kidnapped and forced to live in such a small space for so long, it would be good for him to feel physically safe but not contained, and this is a great way to do it.