Have good 50's style bathroom and Kitchen in duplex buy and hold

[Mark Kvam]

I am looking at a 1957 larger duplex (1300sf/side) that has fairly decent bathroom décor in both units and one kitchen with older metal cabinets that are good but dated.  I am looking at a $900+ rental for a 3br 1.5 bath.  If I can keep some of these elements the update would be much less.  Is it worth the newer look?  Looking at 115K purchase with $20k updating.  Value when done $160k+/.

Market area:  Omaha, NE. Average well kept working class neighborhood.

Thanks, Mark