This episode brought me back to the greatness of seasons 2 to 4.
Charlie's persona has been tweaked a little for the purpose of the episode (imagine a hygiene-conscious Charlie, freaking out over Paddy's pub's cleanliness), yet despite feeling shoehorned, the concept actually works as the episode progresses.
It is also the first episode edited as a one-shot, brilliantly executed and again, the pacing ads to the action and benefits the dynamic greatly.
It's my favourite episode of the season so far! I sincerely hope this trend continues as the the previous seasons have not been up to the mark.