4plex built in 1900 - cashflows nicely. Still debating

[Curtis Moe]

I found a 4plex in MPLS, MN that would cashflow $25-75.00 per month(depending on slight variations in the numbers I've ran(which I've ran 5 times)) with me living in one unit. 

I would house hack and use a VA loan to purchase, then move out after a year and rent the last unit out. Cashflow at that time would be around 800 per month.

I've toured the property with my agent.  The house has newer siding and roof, and the one vacant unit is getting painted right now.  Everything else looks solid and the current tenants keep their units clean.

The two things that make me hesitate are the age of the house (1900), and it's been on the market for 100+ days.  I feel like there is something others know that I don't, and that is why they aren't pulling the trigger.  Also, it is in a C class neighborhood, which I have no problem with.

The cashflow is nice.

Thoughts on older houses and houses on the market for extended periods?