Sleeping Room Question

[Bookworm]

I have 4 kids sleeping in one area and the youngest in my bedroom in a pnp. Hopefully once she is a bit older I can integrate her with the others. I generally don't have any problems, however, one of my 4 (who is only here 2 days a week) is not a good sleeper, and he likes to talk loudly once he's awake. I used to have them in their own seperate rooms, but my husband hated how it took over the house, so I made the switch.