i put 'other' as the wow factor is lots of the things that finish/detail the house after you have sorted the correct design i reckon.
A good balance of outside and inside space is important too as so many houses and show homes either were small houses with massive garden space or massive house with hardly any garden.(some with unusable spaces like big corridors too as in my opinion these are just wasted space that could be an extra room if you added them all together and for me would make it not homely.)
you want people to see themselves living there when they view and not feeling like they wish they could.
if that extra mile went on the bathrooms and kitchen as these are the main things people see as expensive to change -like as suggested the lighting and extra thought into the tiling say with good workspace.......
also nice lightshades/fittings that are a bit different add that extra too as a whole package.
the views and location are the icing on the top
just my two penny worth as i know what i would have added to mine $$ permitting but all in time.
good luck :)