That’s actually interesting I always felt like they were the most functional and spacious rooms out of most we’ve stayed in. Aren’t the RIV studios the 2nd or 3rd largest in the WDW system behind Poly longhouses and maybe BPK?
And as much as I love them, I actually find the longhouses to be a bit deceiving in size since they’re only slightly larger in sq footage but a-not-so- insignificant amount of the size is wasted in how unnecessarily large that full bathroom is. The living spaces feel more cramped to me than it does in BPK or RIV

But we haven’t stayed in a studio in PIT yet, maybe they feel roomier. We’ve only stayed in a duo at the tower and those do feel spacious for what they are, especially in comparison to the tower studios at RIV.