I'm with SanDiego1k!
For me:
Bathrooms
I like a properly isolated bathroom too. None of that movable partition or glass type that looks out into the bedroom. That's one thing I can't stand in a lot of new room designs. A bathtub with a view is sometimes hard to find as well.
Fit and finish
I can notice when things were done half assed. Caulking in a different type or boards and fitment just a little off. I like rooms or suites to be crafted well. Cheap and chic doesn't cut it for me.