MJ-I'm considering this idea to add more space from a useless hall. I can see why you'd say it needs to be a large enough bedroom, but what would you consider the minimum size to do this?

Wow. This is exactly what I'd like to do. I have 2 rooms in the back of my house that I'm considering making the master suite. The rooms combined would make a space that's 21' x 16'. I'd think this would be enough space to recreate this amazing space, but I'd love to hear back from Sims Hilditch.