Deciding the garden is too treacherous, you instead approach the drawbridge.

You cautiously approach the edge of the moat. You can barely keep yourself from reeling back from its disgustingly sweet smell; up close you can really tell just how grimy the water is. To think a succubus' corruptive influence could be this strong! The further in you go, things are likely to only get worse.

As you peer into the water below, you can barely make out something roaming beneath the inky surface. It's probably best not to think about what horrifying pet the succubus has summoned here, and focus on your options.

The drawbridge has not fully rotted away - a few moldy planks to your right reach all the way across the moat, and seem... mostly solid. It's miraculous that any portion of the bridge remains intact. To your left, several smooth rocks poke out of a shallower portion of the moat. They are distributed closely enough that you could try crossing that way... at least the rocks can't crumble underfoot.