This is a generic floor plan of a three level keep with an underground storage escape plan. This was designed for a my party upon their requests for rooms and what they wanted, they just had to clear it out of the local inhabitants. You can find the playable full version of the Forgotten Keep of Stone here:

https://www.dungeonfog.com/platform/share-with-a-friend/?h=0c75688dc0e473d87a1c6f8a7c096dc8

This is meant to be shared with the players so they can design and change it to their needs.