[He doesn't apologize for the movement or for how Sypha almost falls over. It happens, and he just...Sypha actually grabing onto him is likely to unleash a flow of emotions that he isn't prepared to deal with yet. He's just managed to get his head above water.

With Alucard standing in front of them, the thorns open. There's a hole there now, the size of a doorway, and beyond them, a forest. It drizzles now, the scent of damp earth and fallen leaves drifting out on the breeze. Somewhere, deep, deep in the forest there is a fire going, made of hickory wood and oak. It is a scent that wraps around the dhampir almost immediately, mixing with the scent of sandalwood and the faintest hint of iron that normally hangs about his person.]

The personal benefit is that I am afforded some peace and quiet, away from the world and in a place that I choose. It's no mirror or inverse - simply where I wish to be at the moment.

[He crosses the threshold, but pauses, not expecting Sypha to do the same. At least, not without a little more elaboration.]

The benefit to you is to return and build. I've also heard that for many, they gain an additional ability or power from their first trip to this place.