Generating D&D Dungeon Maps?

[intrinsical]

I know this is a little unorthodox, but I have been looking for ways to generate grid-based table top maps, like this example map, for Dungeons & Dragons games. I had already settled on using graph to represent a dungeon, where nodes are rooms and links are either doors or passageways connecting two rooms together.

I was looking for any software that could help me take these graph-based description of a dungeon and render it as an image or html canvas or SVG when I stumbled upon Mermaid. On the surface, it seems to fit many of my needs. I especially love that I can define my dungeons in markdown format, and mermaid can aid greatly in the task of automatically laying out the graph/map on a 2D plane. As a coder, it seems all that I have to do is define a new type of diagram, then code a parser and a renderer? Since I am new to Mermaid, I am hoping the more experienced folk can point out any flaws in this approach or point out any potential pitfalls I should be aware of?