Pretty well the same layout as mine although I'm a fatboat & have a corridor.
Stove in front so that would keep Salon & bedroom warm in winter.
When guests aboard they can enter either end without entering bed
or bathroom so ensuring some privacy.
Layout works for me really well.
Have a look at as many layouts as you can & consider what would work for you.
Not what works for everyone else.
Of course if it isn't usual layout this may affect resale which could be why an 'attractive' price?
The darker marks could be as simple as something damp has been left laying there?
If that was from say, a sinking, i would expect a bit more mould damage elsewhere.
Also a springy floor.
Edit-Fit out doesn't look too shabby.
Wait till you see some of them out there