If you’re still concerned, you could consider installing programmable thermostats or low-flow fixtures to help control costs without relying entirely on tenant behavior. 

Quote from @Eli Ling: thank you, what do you think of this email:I understand your concern about the ceiling leak and your assumption that it might be coming from my apartment.Since we both want to resolve this issue, I suggest contacting the HOA to involve a neutral third party who can determine the actual source of the leak.

most bankers are standoffish ;-)yes, the HML/PML will be higher cost, but my concern for you is the banker knows he can't do your deal, but will string you along for a while, ask for additional information that takes you time (and maybe cost) to put together and he ends up either ghosting you or taking 6 months to tell you no.I could be wrong and you may be dealing with a "unicorn" banker, but I believe a HML/PML that knows construction in your market will be easier to work with, actually close your deal, and end up "saving" you money in the long-term...just my 3 cents - even inflation has increased this!

What sort of issues are we concerned about?

If the answer to both added questions would be "yes", then you have a potential goldmine here.Combining the seller's concerns, and the reality of a big down payment being a negative to the seller (see Q: 1), you should be able to set the terms, with a lower DP, and controlled interest rate, to have this property CF and,...be able to sell the package to another REI down the road,...as long as you buy this using an LLC (a new one). 

I wouldn't let any concerns about this deter you from investing in Section 8 (or other) properties.

If all else take your concerns to yelp and social media. 

Here's what I've learned:Inspections Are Non-Negotiable: Always get a full inspection, but don’t stop there.Plumbing & Sewer: Have the plumbing and sewer systems checked specifically, as these are common problem areas in older homes.Electrical System: If the inspector flags any electrical concerns, bring in an electrician during the inspection phase for a detailed evaluation.

They aren't too concerned with the type of transaction (traditional homebuyer/seller or investment).

Or it could be that the recipient inadvertently dropped the email (it happens).But if two-way communication has been established and you’ve found that the sponsor is consistently slow to respond, that would be cause for concern.