Got Sued from Ex Tenant

[Tony Chen]

Help!!

Recently got a letter from a small claimed court. Our ex tenant that just moved out 2 months ago is suing us and the management company for not up keeping the condo so it's inhabitable to live in there. The tenant only lived there for one year. This is a 1 bed 1 bath condo in San Diego, California. We have owned this condo since April 2014, and we lived there for couple months. Before we moved out, we repainted the wall, washed the carpet, make sure all appliances were in working condition, and cleaned the whole condo. In this case, what should we do as the owner of the condo? Please advise

Thank you

Tony