No Children allowed

We have been booking into this guest house for a quite some time while my wife was pregnant with my son. Never had a problem with the quest house up until now. We wanted to book in for a night and they told us that they don't allow children in the quest house and we never had a problem with our 11 Month old son to book in there.

If this is how they run a guest house and not allow people in with kids then it shouldn't be a quest house at all.