Toilet Nightmare

The cruise started out fine.  This is an older ship so be prepared that it really does not have a lot of amenities that new ships offer now in days.  On the 2nd day into our cruise, my niece was taking a shower late at night as we came in late from watching a comedy show (which was excellent), when all of a sudden she yells from the top of her lungs, that the toilet is overflowing for no reason. We flushed it several time to see if it would stop,but by this time it was flowing into the carpet in our stateroom. We rushed to get everything off the floor as this was unsanitary.  Called guest services to send someone up right away as the water now was free flowing under our door by now.  A supervisor and plumber came up and they were in shocked. Should have known something was wrong from the beginning as when we 1st arrived the bathroom smelled like "piss-Pee". Guest services said we would have to move to another stateroom.(REALLY!). Mind you this room was 10333..10th floor....she moved us to the other side, same floor & as soon as we walked in..I went directly to the bathroom & to no surprise, the bathroom reeked of piss smell again.  Obviously they have a problem with plumbing on the 10th fl.  I went down fuming that is was not acceptable. So they transferred us to the 8th fl. with a port hole...at least the bathroom did not smell.  Since it was after 1am when we transferred rooms, we decided to leave our belongings in our flooded room and retrieve the items in the morning.  When we arrived at 7am...the room looked like a war zone...still tons of water floating in the restroom with blowers outside & inside stateroom to dry the un-sanitary water....THE SMELL was disgusting.  It took us over an hour to retrieve our stuff so we had no time to set up for an excursion since we had to unpack in our new room.  I have sailed with Norwegian many times and never had a bad experience until now.  The only thing they gave us for all of our troubles and nightmares, was a dinner on them at the french restaurant "Le Bistro", which was fabulous, but not worth what we had experienced. This does not cost the ship any additional $$ out of pocket.  Poor Guest Services !!!!  Never again.