I got the observant LTR which tells me all my clients traits fast. It's best if you don't do too much in build mode, they seem to hate it no matter what. If they ask me to make a kids room into a room for a teenager, for example, I find a room that has a crib or kid decorations, delete everything in the room, and then start buying. Also, put lots of lights, rugs, sculptures, and paintings, as long as it doesn't break your budget.