Hello!
We had a similar conversation here: https://itch.io/t/2839532/how-does-one-roguelike-a-bitsy.
I think that Bitsy is quite suitable for making simple dungeon-crawling games. It all depends on your particular design vision and the scope of your ambitions, of course. Like, it's pretty easy to make room-to-room movement and even some sort of randomization, but I don't see how you can make combat or inventory management without some extensive hacking.