I think the media is wildly exaggerating the rental trends in SF.

That being said, if you aren't exaggerating, and there really is poop in your house.

I am somewhat inclined to believe the neighbor but the tenant flatly denies any issue and suggests that the neighbor is unreasonable and exaggerates the issue.

I might be exaggerating and politically incorrect but I can say it as it is, my family moved to the US from a socialist system and this HOA things brings back some memories.  

Basically, if you're just hearing one side of the story, you dont' know if there is exaggeration.

Even if the story exaggerates what is likely to happen, it would not prevent a discussion around what the effects would be.

I agree that you can't always rely on a tenant's word to be true - they will sometimes take advantage, exaggerate or omit facts if it suits them.

Either the couple is purposely doing something at 1 and 2am to wake her up every night or the single lady is exaggerating or making it up.

Unless they use a professional cleaning service when the tenants do not do a sufficient job, the charge for this shouldn't be very high.You say "My family and I cleaned this place day and night for days" - I really, really, really hope this is an exaggeration.  2-4 people cleaning for 16 hours a day for 2 days would indicate that this is either a humongous house, you really trashed the place for years and had a lot to clean or you're really bad cleaners.  

But I refer to this only because there are several properties for sale south of Shaw that I would not take for free(maybe slight exaggeration).