I'm a new host and my property sits on the borderline of two suburbs. Can I set the settings on my property so it will show up in the search profiles of both suburbs when travellers select by suburb?
No, you have to choose a location - which should reflect which suburb you live in. Most guests tend to look at a map anyway after a generic search and see other properties close by, so I would think it matters that much. Otherwise you would have the unweildy situation where hosts claim that they are borderline with 2, 3 or more locations - and that ends up being confusing for guests.