The mid tower looks a little strange, as does the sci-fi-y stairs up to the lighthouse, but otherwise that's looking great.
Tone the light in the arch in image 3 down. It attracts a lot of attention.
Consider making the skylight a slightly stronger colour- the maritime stuff can be prone to getting washed out by light like the kinda bland yellow you have now.
The corner bre_stone props need external light origins or they look much darker than they are.
Consider a few different roof textures. Some of the metal ones, particularly the blue-green one and the rust-red, can look quite nice.
But otherwise yes lovely.
EDIT: Oh, and, window top-middle-left of last picture looks like its z-fighting or something.