So... do I still need to check PH level.?

I would anticipate it would depend on the level of detail you desired but it has been my experience that the will do free estimates.

Short term is always tough but not impossible at all especially with the high level of education and good hospitals in MA.

It seems that often when companies acquire large books of business in one shot there are growing pains and unfortunately those are felt at the client level.

Even when an LLC is owned by another company, DealMachine can find you the owner going as many as 5 levels of ownership deep.I am the owner of DealMachine... lmk if there's anything I can do to help 

If it's currently an STR they should be able to provide you with the p/l statement from prior years so you can see gross rents, operating expenses, average daily rates and occupancy levels.

I have two duplex units and am subdividing into townhomes for higher market value.

It also requires gaining a level of sophistication and knowledge that not everyone has the time, inclination or ability to do.

Retirement accounts are designed to be invested passively so when the IRS sees you running an active business in it, to level the playing field between retirement accounts and other business the retirement account incurs UBIT. 

To me at my current knowledge level, this deal only works if taking over the loan - to limit the out of pocket money to acquire the property since the outside reno and new septic would take up the bulk of rehab costs.