I'm just starting to clean it all up.  

I've mainly looked at Home Depot/Lowes for flooring and larger items and got hardware like knobs, faucets from amazon/wayfair but curious to hear where you all get your materials fromAlso, need to get a double vanity for master bathroom, any recommendations?

It will become pretty obvious to them when they see you making repairs, cleaning the place up, etc.

If not, you need to be bery careful.....if they get the City involved and you have violated Code, you could be in big trouble.Like @Theresa Harris said, get them out ASAP, clean the place up, make it CODE COMPLIANT get a COO, (Certificate Of Occupancy) and do this right next time.Just my $0.02

This year, between tenants, I will be replacing the carpet with vinyl flooring, updating the bathroom vanity/lighting/mirror, and some other small updates such as changing out light fixtures, and faucets, and switching the old blinds from fresh curtains.

I also agree, the property needs a lot of work and the apartments are not laid out very well.. especially that wonky top floor bathroom :)  Thomas, also keep in mind some banks may not lend on a property with an underground oil tank..

Debris from second floor piled up on the first floor, almost all exterior was melted away and would definitely call for a feasibility study.

If you have a few years of revenue for the EIN, if the books are clean you'll be able to get a mortgage as long as the revenue supports the loan.

Aligning with a mortgage lender that puts their clients first pays off when the going gets tough..and it always gets tough no matter how 'clean' the borrower.

The latest finishes, floor plans, and overall feel in theory should be the latest and greatest, which looks great in a tenant's eye.