Finally, finish up the tour by enjoying all the Hedingham amenities, which includes 2 outdoor pools, exercise room, yoga studio, indoor basketball court, tennis courts, and exclusive Hedingham golf privileges.

You could also keep an eye out for a large heated garage and maybe convert part of that to an office space. 

what is the water piping, drains, electric, sewer and heating system condition?

I've added value to the property by painting, replacing light fixtures, multiple ceiling repairs, shower repair, replaced toilets and vanities, replaced wood rotten side door with glass door, demolished an old shed to create more yard space, a/c repair, Heat repair and more .

It may be more economical to just put a 100w lamp in there, or redirect some heated airflow.. one or both will likely be needed either way, tenant or not.At this point I am just trying to ponder who would be a potential tenant - staying at a furnished place at the lake village, during winter months only… some nerdy person seeking solitude?

.- boiler heat with hot water radiators.

You have to have a lot more to be above average - indoor heated pool, more video games, other games - i.e. pool table, foosball, etc.., theater room - those kinds of things.  

Has heat & air, finished walls, ceilings and floors.

Love Florida heat.

If the landlord is paying heat, cooking gas and electric, the voucher will be higher.