"Would it take long to find it?" I asked Sore after telling him about the location.
[Reaching the place wouldn't take long, Young Master. The problem is locating the safe house] Sore explained.
Yeah--this was the problem. Sangen wrote down the region where the safe house was located, but not much else. There was a drawing of an obscure map, which showed that it was probably located in the mountain or near a cliff. But Wesvon, the region mentioned, was known as a mountainous region, so...
Yeah.
And since it was a portal to a secret place, it wasn't like there would be a signage pointing to its location, announcing that, yes, this is the safe house you've been looking for!
If it was me, I wouldn't even place it above ground. It would be covered by something else, like a normal building complex with a lot of mana activities--so the mana from the portal could be hidden--or somewhere complicated like...a ruin or something.