I'd check the water shut off valves (under sinks) - if they are "old" knob style, id try to turn them to shut off the water and see if they leak (they do tend to do it over time) - replacement can be costly because it will require water shut off to the entire building (unless you have the individual main water shut off) - it will have to be done thru HOA, increasing cost. 

If the seller resists, use the tenant instability as leverage to renegotiate terms or request an escrow holdback.

Provide snacks, bottled water, premium coffee, s'more kits, maybe even a small gift. 

.  in our area, it is common to pre-lease 9 to 10 months in advance before the academic year begins and for tenants to pay every utility including water .

Unfortunately, I’ve run into a lot of people who were sold a project that was dead in the water to begin with.

I know to check shutoff valves the water should be turned off.  

“Do not let wet clothing or towels sit for long periods — they can cause black stains on walls or ceilings.”Have tenants sign a Mold Addendum acknowledging that they understand their role in preventing moisture issues and will notify management promptly if they see any black stains or experience leaks.Landlord ResponsibilitiesAddress leaks, water intrusion, or condensation issues immediately — prevention is key.Hire licensed contractors for roof, HVAC, or plumbing repairs.Keep documentation and photos of all tenant complaints and maintenance actions.Maintain proper ventilation and dehumidifiers in basements or areas prone to moisture.If mold is confirmed, notify tenants in writing about the remediation process and timeline.Tenant ResponsibilitiesReport leaks or water damage as soon as possible.Use ventilation fans during and after showers or cooking.Maintain reasonable cleanliness and avoid over-humidifying the space.Follow the instructions in the Mold Addendum and cooperate with access for repairs.Final NoteMold prevention is a shared responsibility between the landlord and tenant.

They're emails don't really suffice (watered down info) as they hide accountability and only seem to be prefer an aggressive approach (from scaling their operations too quickly to form an OpCo during the trough of the economic cycle) to now going after their lenders.

When I started asking specific questions this is what he replied:"There is no points the only fee paid is the down payment for loan registration process fee which is paid after the signing of the approval letter also we will need a proof of residence like ssi document, water bill etc. for proper verification of were you stay."

Tenant insurance requirements so it is clear cut about bug, water damage, offsite housing,  etc