I just looked up the floor plan for a 2016 Forrester 2801 which I think your reffering to as there is no "Lexi 2801". We have a Lexi 283ts, while not the exact same layout as the 2801, is similar.
What seems to be your concerns as to the bathroom. Our Lexi has a similar bathroom layout and we find it very acceptable.
As for the rig itself, we havent had any major problems, but I have gone through the entire unit fixing and modifying things the factory did in a hap-hazard way, re-routing electric wires and water hoses, re-attaching things with extra and better hardware, ect. But minor stuff.
When inspecting the unit prior to signing ANYTHING, make sure it's fixed BEFORE you pick it up, even minor issues. Make sure the sales person knows what he's talking about and make sure you make a really good PDI.