Fantasy Floating House Concepts

These are concepts for a Fantasy House in a world where the entire earth is flooded. I went from 2-value sketches up to 3D concepts of the houses that the project's director chose. Which one would you want to live in on a flooded world?

3D Concepts - Black and White Toon Renders

Refined 2-Value Concepts Based off of Top Left

Original 2 Value Sketches: Fantasy Floating Wizard House

Original 2 Value Sketches: Fantasy Floating House