We enlarged ours to be 11x14 when we did a remodel and it feels positively palatial to me. I will say that I think the key to making it feel roomy was high ceilings (not an option for everyone) and built-ins. The only furniture we have in the room is the bed and two nightstands. Everything else fits in the small closet or in the built-ins. We also have a small window seat so there is a place to sit down (but really it holds the pillows we throw off the bed and we use it to put socks on mostly). We don't really hang out in our bedroom. Occasionally watch a little TV, or read a book but otherwise it's just about sleeping.
I will admit the photo is generous ... the fisheye lens makes it look a little bigger than it really is, but it's the biggest bedroom I've ever had.
Q