Really you have to work backwards to solve the problem here, and having leased both dated and old units and also beautiful new units I can tell you that the beautiful, new unit will also get you the best tenant. 

Hello all, I hope you are having a beautiful day.

My parents were Jehovah's Witnesses (I'm not joking) so I got started long before anyone was paying me to be out there. 

Beautiful work @Garfield McHumphries-  Looks like you created a Chicago Gem. 

Kitchen would be beautiful but lacking a bit on the storage side (pantry is on the wall I'd remove)...

Dean - welcome to beautiful Jacksonville! 

However, while I was succumbing to shiny object syndrome (admiring the fancy new kitchen, new hardware, and beautifully tiled bathrooms), my agent was crawling around in the basement crawlspaces, collecting cobwebs and assessing the plumbing.

Purchase price: $500,000 Cash invested: $136,800 Sale price: $835,000 Contributors: Dominic Turco, Jennifer Haffner Beautifully remodeled home in the desirable Kopachuck neighborhood.

I see other comments mention the benefits beautifully, so I'll leave it to them. 

Purchase price: $500,000 Cash invested: $126,000 Sale price: $799,000 Contributors: Dominic Turco, Jennifer Haffner This beautifully remodeled North Tacoma home on a quiet street offers a spacious open floor plan, and a large finished lower level.