Both the OP and ED were beautiful, not the best of the series but would definitely rank them somewhere in the middle.
As for the actual episode it was really good, that death of Subaru being strangled was especially gruesome, I think they adapted this really well. I guess since these are his only deaths this season they wanted to go all out.
Animation was great again, so much better than S2.
Can't remember if the city hall attack is next or if the flooding happens first but either way can't wait for next week!