Very good episode on multiple levels, but I am a bit disappointed that Muse was killed so quickly after making his real entrance into the season. Still he was very good in what he did and both Matt and Fisk keep forming into what they will ultimately be. Regarding Vanessa I'm pretty certain that she led Luca into a trap and that she'll fully get on track with her husband. I wouldn't even be surprised if she eventually tells Fisk to kill Adam, when/if she finds out.
It's always smart to keep expectations in check but as far as episode 5 goes, the people I remember saying it was their favorite were people that aren't big fans of the show and want it to be further from the Netflix tone.