I like the hammock and the modern clean looks, but maybe the hammock could move somewhere else, for example the living room hanging above the couch with a stool underneath, so it would be easier to get in. Birch wood always goes well with white, especially if both textures are smoothed. The undermount looks great and makes it feel more tidy, whereas overmounts look old and messy. A metal sink is, in my opinion, much less modern and maybe more likely to be an overmount. The lighting is very 'thought though' - there are high up windows, modern looking ceiling lamps and big, sliding doors that let lots of light in and is a great view of the backyard.