Dream Home Decorator - clients are dumb

I built a house, had my Sims live there for awhile, then I moved them to another location, taking their furniture with them. Now the Goth family has moved into the house. My Interior Decorator Sim has been hired to redo a room. This is his second room in the house so far, so you can see where he revamped the living room last time.

These NPC sims are spending ALL of their time in the pool because they HAVE NO FURNITURE. What is wrong with them? There is no bathroom, kitchen, or beds. Huh???