We (wife, I & our Springerdor) live in what you could describe as a tiny house here in the UK, my garage has a bigger floorplan! Downstairs is living room & attatched kitchen, 1st floor bedroom & a bathroom, 2nd floor attic room & a conservatory. Ample room, in fact we don't use much of the space for living in.
I've since added a conservatory, we have a huge garden though!