my house is actually mostly tiles/hardwood (at least areas that are accessible for roomba). but i want it just to be vacuumed.

polished tiles will always have some water marks after washing and require pass with floor buffer to buff it out. i also don't want to deal with with clean/dirty water (yeah, i know that are now few models that you can hookup to drain/water supply. but it's not exactly trivial to arrange in convenient way).

what i really want, is dock integrated with central vacuum.