These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
What's really impressive about the music in this game is that the loops are quite short ("Bloody Tears" is a repeat of only thirty seconds; others are even shorter), but what's in those brief spaces is so good that not only is it not criticized as repetitive, it's downright beloved—the series' Awesome Music page names almost every track.
Critical Research Failure: Everyone in the world who has bashed this game (and even people on this very page!) uses Guide Dang It as the main (or one of the main) criticisms, but in actual fact there isn't one single puzzle in the entire game for which there isn't some kind of clue, however cryptically worded, from either the "scriptures" (hidden red books) or the townsfolk, whom the manual itself tells you are sometimes liars. Speaking of which, more often than not when they lie it's obvious due to their words being either a blatant joke or a reference to something that's impossible by the game's mechanics (finding a flame on top of trees, shouting in front of a church, etc.).
Game Breaker: The Golden Knife. Although it's prohibitively expensive to use to just mow down everything in your path, it's powerful enough to render any enemy - including Dracula - harmless.
Most Annoying Sound: By the end of the game, the beeping that accompanies dialogue is probably gonna be ingrained in your head—WHAT A HORRIBLE NIGHT TO HAVE A CURSE—in a bad way.
Polished Port: In the reverse of what would happen to the next game, the soundtrack to the NES version is widely considered a massive improvement over the original Famicom Disk System version, which is generally hated by fans due to the tinny, whiny instrumentation, and a distinctly lacklustre version of "Bloody Tears."
Scrappy Mechanic: There is no way to speed up the text box marking the change from day to night and back. And you'll be seeing it a lot. Fortunately time stands still when you're indoors.