About a km from cruise dock. Nice small church with a park around it. Seemed safe enough although this city has many many police around with lots of guns
The cathedral itself is nice to see however the area that it is in is rather run down and not what expected. If you walk from costera the walk is quite long however take plenty of water and stroll as you will see how the pace changes from acapulco main bay into the old town.
The best part of visiting the Acapulco Cathedral is the walk through the Zocalo(town square). Stop and enjoy the street vendors. It is all safe.
Lovely seeing the church - still in use - there were baptisms going on the day we passed by. The market in front of the church is worth a look around - felt quite touristy but interesting with some great food and drinks available.