Since you were able to replace them before you lost any rent, I'd put this one in the no harm no foul category and return their deposit. 

My suggestion is to look carefully at anything that could cause harm in a furnished apartment.  

She is saying that she's had cancer (melanoma) and that the sunlight can be harmful.

Also, I know you already told them NO, but for future knowledge, never agree to any remodeling while a tenant is in a unit.....the potential of harm and lawsuits is not worth it. 

On the other, we had panasonic fans at my old work place and they worked very well and were durable. 

We are all familiar with issues related to service animals (specially trained and certified dogs) and assistance animals (such as emotional support animals of any species or breeds).This post suggests a compromise response to those issues.Landlords who prohibit animals do so because theyfear the damage that might be caused by those animals, know it is highly unlikely they will be able to fully recover compensation from the tenant if there is damage, and fear litigation if the animals harm someone. 

The obvious question is what harm was done by putting it in the street?

If the building has 4 units or less and the landlord lives in one of the units.If the property is a SFH and the owner owns less than 3 SFH's.If the animal brings an undue financial hardship to the landlord.If the animal causes damages or harm to others in the building.

Real risk of harm to others, not just defaulted rent and property damage.  

Pitbulls and other dangerous breeds will require risk insurance at a higher premium and will open you up to legal problems if the harms someone.