This came out great. Looks like Pete's not getting much business... The roof stands out very well. Nice lighting specs on it. Maybe the roof could have been lighter on the front side of the building? The bricks with the gray mortar are the slickest looking on this piece. It's nice to see the great variety of stonework on here. The red on your building letters doesn't match. Your Z's look like 2's. Try to sharpen that edge.
What about the lifeless building complex behind it??
Anyways, like I said, this came out great. Nice lighting, grit, and curves for the seating and building top by the logo.
Anybody who wants to know the secret of Isometric art: break out of the 'iso cube' and create interesting contours!