We have our boys in the same room.
They have a trio bunk - one of the ones with a double bed on the bottom and a single on the top. At the moment they sleep together in the double (unless one or both of them come into our bed lol) and when they get older one of them can move into the top bunk if they want.
The bonus is it makes a great cubby - just tuck a couple of sheets under the top bunk.
It also makes the bedtime routine easier - they share a bath or shower then we all hop into bed together and read a few books and have a snuggle before we turn the lights out.
Afternoon naps can be a bit more difficult because they play and keep each other awake but I can usually put a lid on it by taking one of them to the lounge or my room to nap.