We did this with our three youngest up till last year. It was brutal. Whoever was the infant at the time ended up napping in our room until they were close to a similar nap schedule, like 8-12 months old. If lo napped in their room, no one could go in and play, and we had a smaller house with no play room. There was bugging and waking up of siblings on purpose, it drove me nuts. They have their own rooms now and I'm happy with it.
I know sharing works for other people, it didn't for us.