That “mottled” surface color & texture on the limestone is a great LOOK… 
Everything about this project - so far - is perfection.
The Vitruvian Triad: usefulness (program/brief) plus beauty (delight) plus solidity (well crafted). That meaning is somewhat different in the original Latin version - but you get the idea.
The Vitruvian Triad in Latin is "firmitas, utilitas, venustas, which roughly translates to “firmness, utility, and beauty” respectively, representing the three key aspects of good architecture according to Roman architect Vitruvius.
Given what we have seen thus far; this project deserves high praise on all three aspects: structural stability, appropriate use of space, and aesthetic appeal.
Great photo by Alemel