Is this apartment building a good deal? (Very old building)

[Greg Soon]

Newbie here. A 7 unit apartment building that is about 125 years old, brick, Windows AC, rooms partially renovated, fully occupied.

The seller claims a NOI of 63k, which is based on 6% management fee, $2000 repair and maintenance. The rent is close to the market rate. Asking 850k. CAP rate 7.5%.

A commercial lender is willing to do 4.75% 5-30 years at 80%.

Is this a good deal, is the age of building a big factor?