100 year old property- what to look for?

[Luis Vaca]

This property in the Midwest has drawn me in like a magnet as it seems like it will cash flow real well. Thing that concerns me is it is about 100 years old. I'm in the preliminary stages of talking this over with my agent and eventually walking through it myself.

What things should I pay attention to when I go view it? Renters are currently in the home and have been there for years. No big issues when I read over the seller's disclosure. Thanks for any advice!