The spreadsheet you included is incomplete and insufficient for determining if this is a good deal or not. Here are my comments on the analysis, not the deal.
We need to know the total dollars you are bringing to this deal. You only show the downpayment. You are missing the following: capital improvements, working capital, closing costs, pre-payments, and anything else you will need to pay in advance.
You are missing several income and expense lines. On the income side there are numerous things you could do to improve revenue but they are not listed. You are also short on your expense calculations. I would expect to see property management, admin, marketing, and contract services (more than just lawn care.) You have an 8% vacancy factor, but does that include bad debt? In my experience, economic vacancy is typically more than 8%.
Your NOI calculation is not correct. Since the valuation of an apartment is based on NOI, this is critically important. Get this wrong at your peril. Debt service is not part of NOI.
There is no calculation here showing your cash on cash returns, projected valuation, nor projected total returns. I would want to see all of that before making a decision.
With respect to the deal, $35K per door is a very cheap price these days, so it could be a good price. However, $750/mo rent for a 2BR unit is exceptionally cheap, so it could be in a bad or depressed area, so that price may not be so cheap.