Gracie's the same way. Since its been warm here we've been leaving the back door open (the back yard is fenced in) and all the dogs come and go as they please. We always leave water down for them, but take it up about an hour before bed time. We just started letting her come to bed with us and she is able to hold for about four hours when she loving wakes me up by sticking her tongue down my ear. When we first got her she would pee literally every five minutes. Our vet said the training just comes with age. So far it seems to be going well.