This is an amazing loft in Shoreditch. As a tough grader, I gave the area a 4/5 stars. Many (especially artists, but also those who like to stay out of touristy areas like Soho) may disagree, and argue this is the best neighborhood. Shoreditch definitely has its advantages, including a Dishoom with a short 15 min average wait (vs. 45 min in Covent Garden). Definitely tones of restaurants, brunch spots (Towpath) coffee shops (Fix 126 has my favorite mocha in London), and exciting art scene.
The place is quiet, very bright (including in the morning, so people who like to sleep in dark places should bring a sleep mask) spot. Good internet.
Rafa is probably the most responsive host you'll ever meet. Not to set expectations too high, but we stayed 2 months, and he literally typically answered the few requests we had through our stay within "minutes".
Overall: 5/5. Highly recommended. We'll be back when in London!