I can give many other examples of their lack of care, but I think this paints a pretty good picture.There was some damage to the hardwood flooring when they moved in caused by the last tenant.

Original hardwood flooring throughout and large open living spaces, with updated kitchen and appliances.

Maybe I'm just smitten because I grew up in San Francisco and we didn't have the gorgeous row homes build out of real brick, with real marble stairs, with real hardwood floors. 

But you don't need Brazilian hardwood floors or granite slab countertops either.

Brand new carpet, hardwood floors, and stainless steel appliances.

I would have moved in right away to live in while we fixed it up (decent condition paint, flooring) but we have a baby and we got a homestyle mortgage rehab loan and are spending 70k putting in solid hardwood floors throughout (was carpet or vinyl sheets), painting grey (was yellow/beige), new hvac system, (furnace worked but ac needed repair, both systems 15 years old), new hot water heater, new trendy white kitchen (15k with granite) with wood look tile, new electrical panel, etc.

I have done real hardwood throughout, painted, and am currently remodeling the master bedroom.

The current tenant has been there for 12 years and it needs upgrades such as appliances, new screen on a porch, paint all around, refinish the hardwood floors, and possibly electrical and HVAC upgrades.How is this best done without flying out there to manage the renovations myself? 

I had to teach myself from YouTube videos to mud drywall, sand, primer, paint, install vanities, Baseboards, sanding and finishing hardwood floors, installed new flooring throughout 2300 sq ft house after watching 7 minute video, learn the difference between 45° and 30°, and use Goodwill and Facebook marketplace to Furnish

Don't forget to add " except for a $150 carpet / tile / hardwood cleaning fee.