In the series' first romantic comedy of sorts, Troi is scheduled to meet for the first time her husband-to-be, Wyatt Miller (Robert Knepper), as suggested by a traditional Betazoid arranged marriage. This allows viewers (not to mention Picard) to meet for the first time Deanna's piece-of-work mother, Lwaxana (Majel Barrett), who quite simply never stops talking. It also forces Riker to confront his feelings for Troi, which he buried in order to focus on his career (a backstory point that could by no means be an ancient cliche, right?).
"Haven" plays more like an episode from a later TNG season, with more focus on character and less on TNG-season-one cliches like superbeings. That's a good thing. What's not a good thing is the purely forgettable nature of the story. Who honestly believes, for one second, that Troi is going to marry Wyatt and leave the Enterprise? They're cordial to each other and both think the other is a nice person, but they have nothing in common. Oh, and Wyatt has had dreams since childhood of another woman. (Yeah, this is going to last.)
On a collision course with this storyline is a Tarellian vessel — a surprise to the Enterprise crew since all the Tarellians were thought to have died in a war years ago. Destiny is fulfilled when Wyatt realizes his dream woman is actually aboard the Tarellian ship, which is a very tidy piece of plotting business.
What keeps the episode pleasant is the amusing banter that revolves around Lwaxana. Lwaxana can certainly be an annoying-as-hell character, as evidenced in later episodes in the series, but in "Haven" there's just enough of her — without going too far — to convey the point of this overly verbal woman who insists upon being an in-your-face presence and somehow still remains essentially likable.