I have not used any of these companies but turnkey is going to be much more expensive than you doing this yourself.You could buy good used furniture from 2nd hand stores or FB marketplace. 

It has all new appliances and furniture.

By allowing dogs you’ll stand out from most of your competition, many of which are struggling STR owners, but you’ll need to take some precautions (ie, language in your lease, pet deposits, declining certain types of dogs, providing pet covers for furniture and requiring them to remain in place, perhaps fencing in a small area of the yard, etc.)2.While closing costs themselves might be $4,500, you should also account for the following:    a.Prepaying a year of insurance ($2,000 in your estimates)   b.Prefunding your escrow account for sake of the next tax bill (likely a few months or $440 if you close soon and the county is the type that says it’s due by early January)   c.Prefunding your escrow account for sake of your next insurance renewal (ie, likely 3 months or $500)3.DSCR programs often disallow the borrower to waive escrows, meaning to pay tax and insurance bills on their own.

You can start marketing your unit on Furnished Finder with the professional unfurnsihed photos and say "furniture coming soon" and market the date you could have it furnished by.

-Cheap furniture, unprofessional photos, lack of amernities in the home 

Does not need much furniture or renovations at all. 

Not sure how enjoyable a vacant student rental with no furniture would be (assuming you were able to use it)

There is a good amount of trash and left behind furniture Thanks in advance .

On thing you could for the furniture if you don’t include it in a sale is contact and estate auction firm.

What’s worked for me is:-Charging a pet fee-Setting clear rules (like no pets on beds)-Using furniture covers and easy-to-clean flooring where possibleFor me, the extra bookings and income usually outweigh the occasional hassle.