1. Great Deku Tree
Really great introductory dungeon. Cool to see a dungeon based off a living creature. Jabu Jabu does this too but its water based and has Ruto.
2. Dragon Roost Dungeon
Love the sense of height and that you can travel outside the dungeon. Grapple hook was cool and the boss is really intimidating for a first dungeon.
3. Temple of Time
Love the design. You control a cool robot and the mini boss fight with the Darknut was epic.