Both those things would add to the aesthetic appeal of the place.

Better yet, redesign with a more contemporary look, build a portico or at least create some type of more aesthetically pleasing porch.-  If possible, update the listing to say it was built in 2014 (not 2013).-  You say that this is a unique product for the area -- that's not a good thing. 

Obviously aesthetics will need to be gone over between renters.

So, if you're considering putting money in, my opinion is to put it into functional items, not purely aesthetic ones like molding...Just my $.02...

I had somehow managed to remain oblivious to the fact that neighbourhood association and, in some cases whole communities, banned clotheslines for aesthetic reasons until about a decade ago when friends of ours moved into a new subdivision and erected one.They eventually challenged the neighbourhood association and were allowed to have the clothesline if the neighbours adjacent to their property did not object.  

In addition, you could add small canopy's to the top of the windows for aesthetics and also as a sun block.Through both you will get alignment of the windows, some vegetation or color from the flower beds, and added aesthetics for a relatively cost efficient price.I agree with @Gilbert that earth tones might work really well with this very low rise complex particularly since you're wanting to avoid installing grass.

Navigation for larger boats, ships....aesthetics? 

(I'm trying not to let my aesthetic "emotions" get the best of me..I'm a designer..) 

I tried farming out the tiling and just ended up with guys who could mastic something to the wall but couldn't understand how to make it aesthetically pleasing.

Sam & Heather Jones Nice results, financially and aesthetically.