The game is just excellent. It plays very well, it is pretty balanced. That being said, the player can just switch between rooms back and forth until the randomization allows to pick up all of the grails.
You generate a new dungeon every time you go through a door, so it makes it easy to just go back and forth between rooms and get stuff.
The only suggestion I have would be to create an entire dungeon or use the same seed to generate another room.