1. It tells us that with just a little bit of innovation, so much space can be saved thus making small spaces seem larger.
2. The owner liked the concept of how the boats near his old house had pull out cupboards and decided to apply the same concept in his flat to save space.
3. 'Simplicity is the ultimate sophistication'
I think it is because the concept is so simple that it can easily be tweaked a little to complete different tasks unlike sophistication which only focuses on a particular thing, thus trying to make changes to it to perform different tasks would be more tedious.