Or do they just want to sign an agreement to move out in 30 days and you'll give them their full deposit in cash on move-out day, if they leave the place clean?

As long as it cleans my bum I don't really spend a lot of time thinking about it, and I suspect most of your guests won't either.  

Let’s break it down with the 70% rule to see if it’s investor-friendly:ARV: $190,000 (taking the middle of $180K-$200K)70% of ARV: $190,000 * 0.7 = $133,000Minus Estimated Repairs:Roof: $20,000AC: $4,000Additional repairs (general estimate for a property needing updates, say flooring, paint, minor plumbing): $10,000-$15,000Total Repairs: approx. $35,000Max Buy Price for Investor: $133,000 - $35,000 - $10,000 (wholesale fee) = $88,000Since you’re getting it for $91,000, you’re close, but to make it irresistible, consider negotiating the purchase price down a bit further.

@Will ReedGet a second opinion from another company (one that just does cleaning and scoping not repairs as the companies that also do repairs tend to recommend repairs).

Definitely get the structural engineer to look at the joists & support beams to see what's up with the uneven floors.

The property has had about 2" to 2.5" of downward settlement on one side of the house, which has caused drywall cracks and uneven floors. 

I am looking at buying a townhouse in NYC that is currently designated as an SRO with two rent stabilised tenants living on one of the floors and the other floor unit is vacant.

Furnishings that are easy to clean, along with amenities like high-speed internet and pet-friendly options, go a long way.

If you do outsource, some management companies will cover various things like cleaning, supplies, etc. so look into that as well. 

We actually keep a pantry pretty well stocked with basics:  tea, coffee, cleaning supplies & laundry stuff, cup of noodles, ramen, soup, oatmeal packets, microwave popcorn, spices, bottled water, lemonade mix/crystal light, etc.