Researching what's wrong with a property

[Sean Morrison]

I found a potential deal where the numbers almost work out too well. It's a 4-plex in a decent beach community a few hours away. The tenants are inherited, which has me nervous. The deal comes from a wholesaler, so it's a bit difficult to get information that could shed light on things. He says the tenants are great and there are no repairs needed. But it's also listed on Loopnet and nobody's bought it yet.

So, my question is, where should I be looking to try to debunk this deal? My thought is that if I try to debunk it, and I can't, then I should buy it.