Advice on tenant proofing for low income properties

Hello BP! I am a new investor in York, PA. My current financial situation only allows me to deal with lower income properties. I want to know what you other investors are doing to “tenant proof” your units. I am currently dealing with a 3 unit apartment in a C- neighborhood. I purchased the property for 65k with 2 units occupied with rent being $600 and $700. My target rent for the 3rd vacant unit is $750 after renovation. Currently, I pay all utilities. I already have plans to separate gas and electric. My question is: what type of remodel will best fit this type of property? Should I do carpet, laminate or vinyl flooring? What type of material should I put in the kitchen, bathroom? Should I provide the appliances? I was planning to budget the renovation at 35k capping the whole project at 100k. Any suggestions? Thank you