The Legend Of Zelda: Breath Of The Wild is a RPG game and probably the most fun open-world, action-decrypted RPG game by far. 

After I bought Switch and Wilderness Resort in early August, I played almost every night and weekend, taking my lunch break to work and walking when I went out. 

The current game time is more than 160 hours, and I think it's worth it even if I buy Switch to play with the wilderness. 

The best evaluation of a thing should be "just right". Wilderness rest is such a right game. It's hard to say where it is the best, but it's just a variety of right trade-offs. It creates a world with a full sense of substitution and becomes the most fun game.