[He texts over the address.]

It's called the Tenshouin estate. Front door's unlocked, I'm on the third floor, fourth door to the right. Don't come here unless I invite you.

[That last part is given pointedly, like he's talking to a child. He may not care about who he brings back to his regular apartment, but the estate is something close to a holy ground. He doesn't want to taint it too much with his own life.]