I'd live in one apartment, and rent out the others, one or all of which might be medium term furnished rentals.

So like, start with low-to-medium sized audience types who you can give them the product and let them use it and give you feedback.

For example, you have a medium sized remodel (maybe similar to your sunroom project.

There are many resources out there with the primary medium being books such as @Brian Burke Hands off Investor, Blogs and Forums such as Bigger Pockets, and a number of good podcasts on passive investing such as @Taylor L. who has a show called "Passive Wealth Strategies". 

No lot shall be reduced in area so that yards, lot area perfamily lot width, building area, or other provisions of this ordinance shall not be maintained.does this mean that you can not build multiple cabins on the same lot even if the lot is 3+ acres? 

As long as the whole walkway is wider than the door width, you should be fine.

As an investor in Short Term and Medium Term Rentals, I really want to branch out and look to investing in these type of properties around the world.

So my main question is, does anybody do airbnb or vrbo in the summer months when it's most profitable and do a medium term furnished rental in the winter?

I am now aiming towards medium term rentals vs STR on one of my rentals for this reason.

Consider cutting your teeth in a medium sized town (>10,000 ppl) with very few STR options.