Due Dilligence if a property is already occupied

[Shawn S.]

So I'm looking at a property that should be a solid deal for us. 72k duplex in really good shape in an up and coming area. Very small place, 1 bed 1 bath, but very solid condition. 2 tenants both paying $475.00. How do I go about verifying that information? What do I need to request to make sure all is as it is being told? And lastly, the only downside we can see so far to the property is there are no laundry areas. How much of a negative is that?