Sounds to me to be a dog which fits best into a family used to dogs and with lots of time for them.
They also tend to prefer one alpha leader. Who is going to be the alpha leader? The kids can´t and Mom and Dad have no time.
While excellent companions to those who understand their needs, Portuguese Water Dogs are not for everyone. Their intelligence and working drive demand consistent attention in the form of regular vigorous exercise and mental challenges. Gentle and patient, they look (and are) soft, cuddly, and cute -- but they are not to be mistaken for "couch potatoes". When bored, PWDs will become destructive. A PWD can get into the garbage, silently snag food off the kitchen counters when your back is turned, and can even learn to open cabinet doors.