We have one breaking ground in Newark, OH in Licking County, a submarket of Columbus and it's ultra modern no garage testing the market for affordable housing. 

My window had a film over it for privacy- bt I nejoyed it more than modern day bathrooms with the fans

I plan on gutting the rest of the bathrooms and making them more modern than what's currently there. 

@Kenneth Hynes LVP looks more modern and will help the apartment stand out.

Hello BiggerPockets Community,I'm embarking on an exciting journey to acquire and renovate a duplex from 1900, aiming to tackle the inherent challenges of outdated insulation and the lack of modern vapor and air barriers.

About your concerns on rents: you'll be hard pressed to find an example in modern history where rents declined in a meaningful way, not even 2008. 

Just get a proper home inspection and investigate the basement quality, electric type (i.e. knob and tube, aluminum, ungrounded, modern romex), plumbing type (i.e. cast iron, galvanized, pvc), and just be overall ok with an older building material.

It's easy to pass them all by and find one with amazing ocean views and bad decor, or better yet a STR with modern decor and close to the ocean.

My wife found some mid century modern chairs from Walmart but they were fabric and I’m sure they won’t hold up.  

New modern lights and ceiling fans, quality furniture, Big screen TVs (not so expensive anymore), big washer and dryer, one of those cool refrigerators.If you ever go stay in a nice hotel or nice airbnbs, try to pick up on some of the things they do to make it feel luxurious.