Yes, our bedroom will be forever forbidden, but the rest will be open.
Well - the front / sitting room will be free of access when we're here but we'll close it at night and when we're away. I have three hamsters in there, and some of them are real escapologists! Well I'm exagerating... But one of my females, Daisy, did escape two nights ago, and I'm sure Hugo would have loved to play with her, had he been there!
That still leaves the kitchen, hall, bathroom, guest bedroom and study for Hugo to explore. That's alright, isn't it? And when he's old enough, we also have a garden, and there's already a cat flap installed.