If you are thinking of having piggies in a bedroom I personally wouldn't - many members do though and find it ok.
They don't sleep all night, they do tend to be quieter and potter about less, they will get up and drink from the bottle so that can be noisy. Early morning popcorning can be lovely to wake up to, but not at 4 in the morning. The alarm clock soon becomes their signal that food is coming and they will nag from the moment you open your eyes.
Suzy x