Upgrade appliances, install new countertops, and modernize fixtures wherever you can.

Older people sometimes don't like technology and would not bother looking anyway. 

These improvements modernized the property and enhanced its market appeal.

These improvements modernized the property and enhanced its market appeal.

I use the Schlage Connect with Z Wave technology.

These services invest in technology, data acquisition, and maintenance to ensure the quality and reliability of their information, which is why they charge for access.

These minor improvements modernized the property and enhanced its market appeal.

It's right next to the cute downtown square with a lot of modern shops.

Bars will be on the windows (crime reference above).Don't be surprised if your cheap purchase costs that much or more to repair as your repair costs will be much higher than a home built with more modern materials, such as in the 1940s-1950s.

Since you mentioned the property needs a lot of work, if you could put in some higher end finishes into the cabin (kitchens and bathrooms), there would almost certainly be a pretty solid base of STR guests wanting to stay there - almost without exception, every modern STR cabin in Minnesota and Wisconsin that I've seen are all doing tremendous numbers.