First deal too good to be true...?

[Creighton Bertrand]

Hi guys, 

I've been stressing out about this current deal so figured why not go to boards and ask the real professionals. This will be new first investment property so I want to make sure I'm not missing anything here. 

Basics : duplex - 2bdrm/1bath 

Purchase price : 130,000

Assumed value of house : 137,000

Current rent: 750/unit.

Utilities separately metered. 

Taxes: $1,200

Insurance : $1,100/yr

Maintenance : $1,600/yr

Cap ex: $1,600/yr

I'm coming up with great numbers on roi for this place so I'm not sure why it's been sitting for a few weeks now. It seems too good to be true. What would prevent other investors from rushing to this? The typical cap rate in this area is 7-8%. Granted, the neighborhood isn't amazing, probably class C tenants. Could that be the reason why no one wants to touch it? It has  a new roof and vinyl windows too. I've walked it and looks in decent condition. No remodeling necessary. I talked to current tenants and they said rent is on par with market. I also looked up market rent and it was accurate. 

Please let me know your thoughts or what I'm missing. 

Thank you for your time and help!