My two go in to their individual crates which are in the spare room. They go there at night and if we are out (although not for long periods). Since ive went back to do my postgrad, there are two days a week i am in uni most of the day, and this is when they go to my Grandparents. They love it there, as they get spoiled all day and i think it gives my gran company and 'someone' to chat to. They definitely keep her amused.
Since having the dogs though my life does work round them.... i plan my day depending on when they get fed and when they get a long walk etc. People think its crazy... but i think its something people overlook when they get dogs.