A co-signer does not guarantee good behavior, or zero damage, or zero noise, or zero people parking on the lawn or smoking in the house, or bringing in pets or having loud parties, on and on.  

"This is urban living, how do you feel about noise?""

Imagine loud brake screeching noise.....rrrrrrrrrrrrkkkkkkkkkkk!

@Harlowe Thrombey that is just covered as part of a noise disturbance clause in most leases.

I also get lower noise dishwashers. 

Also, is there a point where it's up to the tenants to solve their own problems and how do you draw that line--eg if there's noise or loud music in the neighborhood or other quality of life issues that don't apply to the physical integrity and function of the property.

In my opinion, your clause would be a violation of a tenant's right to quiet enjoyment.Quiet enjoyment is not about noise.  

Review anything that beeps or  alarms,  review any special town ordinances (grass, noise, parking), collect a contact sheet including an emergency contact (I tell the tenants this is not something I use it is just in case and I mean it). 

noise!

If you remove them for an unnecessary reason such as noise complaints, you could face legal troubles with the ADA.Talk with the handler and voice your concerns in a respectful manner.