A little more progress...
I painted the main doors of the hotel using several thin layers of yellowish brown. I weathered it with a little gray wash near the bottom, and then a very thin black wash. The handles were painted a metallic brass color, with some greenish gray weathering. When the paint on the doors had dried, I masked them off with Scotch tape so I could paint the frame. The frame was painted with the same "wine" red color that I used for the hotel's trim:
I still have to cut glass for the windows, but here's how it looks temporarily installed on the building:
I finished putting the styrene "Spanish tiles" on the parapet roof on each side of the building. I used spackle to represent the large areas of mortar under the ridge tiles. The tiles were then painted as described earlier:
Then I finished the rest of the roof. I masked off the locations for the detail structures, then painted the top of the roof using concrete gray latex exterior paint. After brushing on the paint, I stippled it to eliminate the out of scale brush strokes and give the paint a little texture. I painted the underside of the eaves the same color as the walls. Next, I glued on the detail structures, and weathered the whole thing with thin washes of acrylics, and topped it off with a coat of Krylon UV matte clear:
And here's the whole thing as it is, so far:
I still haven't painted the rear wall of the building. I'm trying to decide whether to add any detail to it, or just leave it blank. Most of the rear wall will be against a cliff, and the rest will only be visible from one angle, so it may not be worth the trouble. Other tasks awaiting completion are finishing and installing the window frames, adding signs and a few other exterior details, weathering the building, adding lighting, and some interior details.