Are you looking for a vacation spot because you want to buy a short term rental, because you want the opportunity to write off vacations because you're checking on your investment, or do you have another reason? 

I would just write up a new lease with the remaining tenant for however long is remaining on their lease. 

Once you establish your lender and get terms in writing for the initial purchase and rehab loan, (most Hard Money lenders only require a few bits of information such as property address, purchase price, Rehab amount,  ARV, FICO, cash on hand and experience level), request a pre-approval letter and make your offer! 

@Eric James does the wholesaler write his/her own contract?

I'm writing my own specifically for extended stay rentals.

If they conveyed what the offers were in writing, I would have at least an opportunity to outbid on this cash sale and the property owner would have an opportunity to receive more than the value of the property.

Here is just one discussion thread that might be helpful:https://www.biggerpockets.com/...Not sure how your state works, but here I would write the purchase contract with the buyer as "dan Walker, 'et al'" or an entity to be formed." 

"(8) If the tenancy is for occupancy in a dwelling unit that is located in the same building or on the same property as the landlords primary residence, and the building or the property contains not more than two dwelling units, the landlord may terminate the tenancy at any time after the first year of occupancy:""(B) Without cause by giving the tenant notice in writing not less than 60 days prior to the date designated in the notice for the termination of the tenancy"The lenders will not accept it because it cannot be done without you living in there in the first place.

If you had nothing in writing before he started and the only hard copy of the bill is what you have after he is done then you are on the hook for it.

From there, write your why down somewhere where you will see it everyday and remind yourself why you want to achieve success.