Water leak somewhere

After filling fresh water we had water in the corner of bedroom on one occasion. On one occasion after filling the fresh water we had water leak under the couch area and run all along the couch, in front of the refrigerator and shower. Not a large amount. We never really could figure out where it came from. The last time we had water as you come in the door by the bottom of the kitchen sink on the floor next to the door. We couldn't see any water under the sink or on the floor below the drawer beneath the sink.

Anyone have any ideas where the water might be coming from? We usually find it after arriving at our destination or on arrival at home. No leaking while parked at campsite.

 

Do you have a reef tank in your caravan/campavan? From the pictures I guess you have.

 

Wow I was lost there for a second. I was about to say hey man this is a fish forum not for motorhomes!