Yes, I agree, I'd want a large, mature tree as host. Man, I moved before my plant 'bammed,' if it was going to. Maybe shy about someone peeking at it constantly, and did it after I left... Don't know where any particular image is from, but goog has some images:
https://www.google.com/search?...
I would never have the guts to do it, but I love a vine on a building too. I think yours is perfectly placed!
Since that darn thing cost $25 (over a decade ago,) I've tried to see if I can see it on that tree on google earth but there's just not quite enough resolution...