An amenities option was recently added to flag whether our pool is "private" or "public or shared."
I'm struggling with this one. Our listing is our poolhouse. So, it's our private pool. And it's huge. But we live in the main house, so we use the pool too (though we do generally give guests their privacy when they're using it, since we can use it anytime). So theoretically it is shared. But in no way is it public.
I always like being detailed, but it looks like they've pigeon-holed listings like ours so they are indistinguishable from, say, a pool shared by a whole building or apartment complex.
So for now, I just haven't set an option. Hopefully they'll add a "shared with host" option or something, because I can't imagine our situation is uncommon.