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

A contractor was there that day to fix the floor, and said there was not problem with the heat.

Do you have someone that manages it all including bookings and customer service or just specific parts like cleaning only? 

Put language in your lease about use of the screen for all fires.I always made it the tenant's responsibility to have the chimney cleaned at least once per year for the built in fireplaces and twice per year for the store bought types as they have smaller chimney piping.  

Need a lender who understands that clean title will only occur on the day of closing.

Kit showers or tiling, or tiling the shower (hot mop or tub shower then tile the rest) all are different3) what is the cost to renew the floor with a LVP?

Property was sitting on market and needed light updates (roof, flooring, paint) but was in a great area that allows STRs giving me multiple options when deciding on rental strategy How did you find this deal and how did you negotiate it?

Faux wood floors, new blinds.

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.

Trying to run a successful PMC is difficult but trying to run multiple companies - VR, Annual, cleaning, and landscaping is probably going to give you an aneurism.