It's definitely a flawed comp method on it's own but if buyers and sellers put weight on it, then it needs to be considered.  

Get a property inspection: As you mentioned, you will need to hire your own inspection company to inspect the property and uncover any potential issues that may affect its value or safety.4.

Purchasing from overseas, I made my offer based on the advertised info and, believe it or not, did not uncover that 2 of the units were just 1b/ 1ba until after due diligence. 

I know that this is a personal flaw and that I should go for it if it makes sense to me after doing my own research, however, I can't help but think that it may not work out the way I believe it could based on all of the negative sentiment I have received from family and friends.

Sometimes talking to locals or joining real estate investment groups can uncover hidden gems.

The best way to explaining this is for you to download an IRR calculator spreadsheet or build your own simple one and play around with one.For what its worth most deals I deem meeting minimal IRR standards is 13-15% but you have to dig a little deeper to uncover the real placements of cashflows and capitalization events... and then dig even deeper to verify the assumptions such as occupancy, rent increases per year, and what reversion cap rate was used.Again I don't look for IRR cause its manipulated a lot instead I look at total return on a 5 year basis.

They will have their quirks and you might uncover things as you get into it so be conservative

A mix of determination, perseverance, and a bit of luck can uncover hidden opportunities in unexpected places.

What flaws do you see in our above plan? 

the platforms have there flaws, we have air, vrbo, direct book, website etc. i would say we have less issues with vrbo than air but the one issue we had, we submitted cost with air and received $2500 for some damage the guest did. if your legit and on top of your game, take pics, save receipts and document; its not hard to get a reimbursement but the platforms have their flaws and when its said "any, all, always" regarding these platforms(or anything in life lol) etc there is usually someone wrong about that.