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. 

Someone used all the hot water , this one didnt clean the bathroom , why are there dirty clothes piled over there . 

In the 1930s lead pipes were supplanted by copper as people realized lead was unsafe.The use of lead wasn't officially stopped until 1986 by the Safe Drinking Water Act Amendments.Also, up until 1986, many homes were still using lead-based solder on copper pipes. 

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

Its the training part, but also a LOT of other steps: verify pay stubs, copy ID or drivers license, hand over keys, do property orientation (going over how to rest a GFCI, turn off water, change HVAC filter etc etc) and collect sedurity deposit and first month rent

“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.

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

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.

.  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.