more than likely you will need to speak to the land groups of home builders or the land and development groups of multifamily buying groups and most are going to be publicly traded. make sure you have enough housing units. if you provide more info I can help out. there's a million different niches in development and more than likely less than 10 buyers for what you are talking about in any niche. we just reached out to Greystar for apartment development site we are putting together that is a vertical development. we called their office for the midwest and messaged every single person on their team on linkedin. put the effort in and you'll get results. 

In the house that I hope to rent out to mid-term travelers there is a treadmill and I am thinking whether to keep it there. 

Our house has a main part of the house and a MIL apartment in the basement.

Also look at how much the house has increased in price-if it has increased a lot, you may want to sell it to avoid paying capital gains which will kick in if you sell it a few years down the road.

I am hoping to begin investing in Real Estate by house hacking in the near-future.

I bought a house on a well and need to conserve water.

Or did you mean you'll be renovating the house so that other third party assisted living services can rent from you?

I have a friend who is an agent that is looking to assume my VA loan and buy the house off market, so that I can avoid paying fees and commissions.

Shall we start with the demographic that rents houses?

I would highly encourage you consider House Hacking.