Quite a long time ago, there was a thread on the CC where hosts added each other's listings to their wish lists. It turned into a massive thread with lots of hosts participating. I have no idea if it wielded any positive results to bookings, but it's something to consider....
Personally, I don't have an IG account for my listings, but I know I probably should have. I'm just really rubbish at IG. I mean to post stuff and just don't get around to it!
For some reason, the 'share' option on the listings does not include Instagram, (although Facebook and Twitter are there) and I am not sure why...
Anyway, RE setting up a separate IG account for a listing, do we have to use our own photos or can we use ones taken by an 'Airbnb photographer'? I am just not sure what the copyright issues are.