Ideally you have not replaced roof, hvac, flooring, kitchen, bathroom, fencing, windows, foundation repairs, hard scape repairs, electrical, plumbing, etc.  

This followed after a 2X overflow of a tenant on a first floor that flooded his bathroom using a portable washing machine and flooded the basement apartment.

Planning to start a complete home remodel (interior/exterior) on a home (currently 837 sq ft), kitchen and bathroom bump out, and add an additional bathroom. 

. $50 per bedroom, so a 4-bedroom house will cost you about $150~200consumables - bathroom supplies, kitchen supplies, beverage supplies: $20~30 per week, depending on how much you providewear and tear - towels, linen, kitchen utensils, some furniture: $1000~2000 per yearRepairs/replacement for things that guests break or steal:  $1000~2000 per yearAlso, if your personal use is less than 14 days a year, the entire property's expense is deductible against STR income, but if you use more than 14 days, then you will have to calculate the proportion of how many days it's rented out vs how many days you or your family uses. 

Clean Photos, Clean Bathroom pics, Stated bed size. 

Quote from @Sarah Kensinger: In some properties we might stash some under the bathroom sink in case a guest forgot theirs, but it's not something common we do.

It's a 4 bedroom 4 bathroom house in a Auburn AL which is definitely a college town (though I do not refer to it as a student rental).

We finish a bathroom we can request an inspection, they come in inspect we get paid say 25%. 

It is not illegal as long as they aren't hidden and aren't in bedrooms or bathrooms...I have two in the common areas.

If the home is 100 yrs old, I'm assuming it's a definite gut which is going to require new plumbing, electrical, heating, cosmetics.I spent about $140K reno on my multi family in the heights on NY ave and there were massive problems with it but it was a gut to 3 units & adding 2 bathrooms, 3 brand new kitchens 4 bathroom reno in total, all new flooring, sheetrock , insulation, framing, doors, electrical, plumbing, paint, parts of roof etc.