We have 2013 model and continue to love it. Good basic design. We work out of our rig so we have removed one recliner and built a desk in that corner.
all plumbing and electrical are easy to work on.
only real problem is we had to blank out the window (used piece of foam insulation board) as the light made it difficult to watch tv if the sun was still up.
it seems you are buying a used or at least a unit that has been on the lot for a while....CHECK THE CAULKING and make that your first project to redo.