Love the final product, it really does look like some of the cheap motels I've stayed in- although none have had such an intriguing view as an inner city style fire escape.
As far as digital photography I agree. It's great to use as a tool to really get a nice, up close view.
Only problem is like you say, if it's off a little bit- that photo will really bring that out. You think you've finished a project only to have a photo taken that's so "close up" the model looks bigger than you- then you can really be in for some ugly surprises.
Taking close ups as you build helps for sure- one thing I've started doing is taking harsh, flash photographs. The way I see it, if the model looks ok under such harsh lighting, natural lighting can only improve the look from there.
Anyway I'm really looking forward to your next project! Nice work on the coffee stain and the cigarette burns. Wouldn't have been right without it, I wouldn't have noticed, but it just wouldn't have been right lol