Ahoy! I have only one thought on doing maintenance to that quest, so hear it well.
While talking to Abbot Remigio, the cutscene camera should focus on him while he says his line, "The Summer Palace is no easy place to enter, but there is a way. Tunnels under the grounds lead to a drain which opens under the cliffs nearby.".
Well, that's the only thought on doing maintenance to that quest. Hope that gets done soon. Thanks!