You payment to the lender would be your Principal and tnterest payment on your loan plus 1/12 of the property taxes on the property and 1/12th of your property insurance. In addition there is a home owners fee that your pay to the homeowners association (HOA) that is paid monthly for maintenace of the common grounds - landscaping, and other items. I would be able to meet with you and explain further if you would like.
According to the listing information, there are condo association dues of $254/month for this unit and the dues include "Cable TV, Earthquake Ins., Garbage, Water/Sewer." So, you would be responsible for your mortgage payment as well as the condo dues.