Have deliberately not read any other responses before posting. I like house b best, because it feels light and airy, I like the knocked through kitchen diner, and it has a nice garden.
House a is also nice, but doesn't feel so appealing and no pics of garden makes me suspicious.
House c feels dark, the decor is oppressive, and the garden feels small and dark. But the pics on this house don't do it any favours and would benefit from being redone.