A client had an old photo that was a prized family possession from a long time ago. The object of the painting requested was to give the same feel as the original photo. In that case, extras are truly not wanted, and you need to get as close to the original as you can, both in color family and correct placement of architectural elements.
When that is important, as it was in this case, I relied on gridding to give me an accurate read for placement. As you can see in the representation below, I think I got it right.
The client was pleased, the recipient was pleased, and so was I.