Needs gutters, full kitchen and bath, floors, paint with some drywall repair, windows, front porch and the deck on the rear is pretty poor as well.

My longest recent rehab was 2.25 months and added a half bathroom, took down 4 walks including load bearing, put up 3 walls, new plumbing, electrical, flooring, huge percentage of drywall, an eye brow porch, new kitchen with full layout change and new bathroom with full layout change.  

You will also need wall hangings and art, not to mention kitchen stuff like silverware, pots and pans,

Like someone else mentioned, doing a short term rental in a secluded basement that is very private and walled off is one thing, but sharing the same refrigerator, kitchen thermostat, etc. with a complete stranger seems like it will introduce more problems than what the money is actually worth.

For instance, one property seems to have an extra bathroom that is not listed in the county records.I plan to make some modifications, including removing a closet wall to expand a bathroom and taking out a kitchen island that contains electrical outlets and a switch.

If the kitchen was not cleaned properly, it certainly should have been. 

Fridge/kitchen space. 

If you have a 6 bedroom in an area that does not have a university (students looking for shared space) or is in a family friendly place it may sit vacant longer between tenants.For Capex, try not to use a generic number - look at the roof, furnace, hot water tank, kitchen - when will each need to be done and what will it cost?

We're not curing cancer; it's just buying real estate, doing some basic math, buying some furniture and kitchen utensils, maybe getting creative with some amenities, and listing properties on STR platforms...it's daunting when you're new, certainly a grind to get started, but it's not a mystery or puzzle to solve.

Secondly the kitchen could use some cosmetic upgrades as well especially considering the bathrooms look so nice.