Well, I've never used it as a convo piece or waxed poetical on describing my decor. That just doesn't make a whole lot of sense to me. (However I'm happy and pleased when people actually DO notice things because I am very pleased with my own sense of style and put a lot of thought into it- so if someone asks or comments, I might mention where I got it, or give a detail about it, and so on.)
I love, love, love creating my space though. I wouldn't say I spend tons of active time thinking about it, but for example it's one of my favorite things to do when I move to a new place - I love doing what I view it as 'maximizing' the aesthetics -- it's very intuitive for me, what 'feels' right and what I think goes where. And, as another example, I recently had to move a bunch of stuff and 'downgrade'/simplify my preferred look, when I got two new cats, and the act of needing to do that forced me to try to be creative in new placements, putting things higher, and so on --- and that in effect was 'maximizing' what I could do with my new parameters - if that makes sense. Sometimes I end up liking it better, sometimes it just is what it is. But yeah- it's an important extension of myself, in a way, 'creating' my space - and I like very personalized and more unique things.
(Edit: fwiw I have one INFJ friend who loves doing this as well, but I have another INFJ friend who feels she has no sense at all for these things, so always wants help with regards to it / goes super minimalist just because she feels she lacks that ability -- it seems to me this indicates it's a personality aspect or possibly just value/talent that falls outside of mbti)