Though I didn't play much of the original Game Boy game this fits in perfectly with the many other handheld-style offerings such as A Link Between Worlds and The Minish Cap. It was great to see Nintendo do something new and creative with the art style. It should please new and old fans alike. That said, if you are brand new to the Legend of Zelda series I'm not sure this is the best starting point (I'd recommend Breath of the Wild first).
It is an old-school action/adventure game that feels a bit more heavy on the puzzle-side than the action side. The entire overworld map itself is essentially a puzzle. Much like a Metroid title, you need specific tools/weapons/or gadgets to unlock new areas to explore. Eventually, you'll be able to roam the entire map freely, but at first you'll be quite restricted. Also, because you start out with only 3 hearts the difficulty curve feels somewhat inverted to me (it's more difficult at the start and then gets easier as you expand your health and get better equipment/weapons). In fact, once you're equipped sufficiently enough to start exploring the entire map that becomes the best aspect of the game. It also helps there is an in-game hint system signified by tree-like homes with a phone on them if you get lost on where to go next. Fortunately, you can find guides for this game fairly easy online as well if you happen to get stuck. Though there are only a few, the mini-games are all quite fun. I'd say each is worth roughly about an hour (or 30 minutes) of your time. Just enough time to reap the rewards but not so long that you'll get bored with them. Thankfully, the number of goodies to find throughout the world is moderate. Nowadays developers seem to go overboard with putting collectibles in games. Here, there is just enough to make it fun to complete but not so much that it becomes a chore.
On the other hand, the dungeons were not always the best. Particularly some of the later dungeons where I encountered an annoying amount of backtracking. I'm fairly sure I went back through the same two rooms 20 times. Some of the puzzles are quite cryptic, lacking any real context for why they exist. For example, why are chess pieces randomly appearing in these dungeons? Also, compared to other LOZ titles of this nature the dungeons start to look the same after awhile. Which brings me to the dungeon creator. I enjoyed this new mini-game but it would be nice if it allowed you to create consistent themes rather than mixing rooms from various dungeons together. That said, it's a start and I hope this leads to more in the future. I finished the game in about 20 hours (collecting every heart piece and seashell, etc.). Aside from a couple of annoying dungeons this a wonderful game that I would highly recommend. One fair warning, don't expect much in terms of plot - this is based on a 1993 Game Boy game afterall.