I’ve been in this situation and with a growing portfolio and expenses, it’s hard to put money aside for two mortgage payments.At Sid Was Here, my management company, we’ve always offered to let guests pay into the future for longer stays.

Maybe @John Bowens can offer some help as well.

My CIPS® designation and global network allow me to offer clients insights into international real estate trends as well.

I know there is surety bond process and there a a few companies that appear to offer a service (Like Rhino)Furnished Finder has a new feature called Worry Free Waivers but when I tried  to better understand their process, it was clear they have not done a good job of vetting this out. 

Also, don't complain about your offer not being accepted - just submit a better one or walk away - the seller doesn't care about anything other than how long its been on the market and how close to ask you are.

That seems to have changed over Covid and not sure they ever got back on a regular schedule.Not sure what you have to offer other than the 4 bedrooms, but I would guess rent would be more around $2400/month vs $3000

Everyone and their brother is now offering AI tools to evaluate loan documents and bank statements.

Your buyer pool is essentially reduced to cash buyers, and a savvy cash buyer will figure out why they are the only offer on the table, and reduce what they are willing to offer in turn (since they know they can't refi to pull the liquidity back out of the house for redeployment elsewhere).

With myself as an operator I would offer the following: underwriting the deals, a detailed scope of work, a detailed material list, the labor, and the management.  

Be sure to explore all around the forums as well as many of the FREE tools that Bigger Pockets provides.I am on the lending side of things and am always happy to hop on a call to discuss loan options that are out there, even if not offered by my resources.