One normally thinks of contemporary characteristics as being straight lines and stark in nature, but this designer chose to present a combination of both straight lines and curves to soften the space.  They used curved details throughout the architecture as well as in the furnishings.  Archways, windows, built-ins and upholstery pieces like the curved sectional and chairs reinforce the idea of mixing shapes to enhance the space.  The neutrals lend themselves to a contemporary design, but pops of color add interest and whimsy to the rooms all that have amazing lake views.