With wood you are looking for hardness and stability; the wider your plank the more movement you will have from heat/cool and humidity.

@Ryan AdamsAlso just to get ahead of this - Im aware the manager should have had the heat on at a reasonable level given the time of year but have no idea where the thermostat was set.

They are unsafe and it should be in th elease that no auxilery heating units are permited to be used in th eproprty. 

Needs a new cooling/ heating system.

Heating - oil, gas or electric?

worcester is neighborhood by neighborhood and street by street, i have clients who paid $370k for a 3 decker and get $4300 /mo in rent with lots of choices and others who paid $250k and have $3050 a month all section 8 and may need to upgrade heating systems. 

Keeping the heating and cooling bills low is a win-win.

You will also increase your electrical bill for the pump (around $50 a month) and water bill for refill during summer.If you have a heating system, the cost will also be higher.You will need a self closing gate to access the pool and/or the unit next to the pool will need alarms on the doors/windows that can access the pool directly.

Other than the obvious, heat and air, plumbing, electrical, roof , etc and the rental history. 

Problem with this property is the Landlord pays all the utilities (heat, hot water, electric).