A lady was sitting on the suspected seat, so we had a quick look around the church while we waited for the seat to become free. When we came out, she had gone. We were pretty sure we had found the location, even the item mentioned in the hint, but we were unable to find the cache container itself. Too bad, but thanks for bringing us to this location anyway. Oh, and there was a protest march running down the streets in this area whilst we were there.