Taking a look at multi-family homes

[Ray Lim]

I found this market flyer for this property

It is a 8-unit multi-family property being sold at $800,000.

The market flyer seems to do the basic number crunching already. It calculated a CAP of 6%. It also already calculates the mortgage payment at LTV of 80% and shows a positive cashflow.

I am considering buying this b/c of the location. It is located in the U District near University of Washington.

However, I'm new to investing so I do not know if this is worth the price. The first link shows that it was built in 1906 which is over a hundred years old. Are there going to be large problems w/ the property in the future?

2nd, the cashflow calculated is $9118.
With a $160k downpayment that is only a COC of 5%
According to one source because the return is not that great compared to stocks, I should not consider this investment.

However below cashflow it adds a principle reduction of $6700 adding to a total return before taxes of $15.8k

What is this principle reduction? should I even consider it?

Please give me some advice or next steps in looking at this property.