Was thinking of a SCP that's a cottage that changes its interior appearance to match your childhood home or whatever building you feel the happiest and safest in (possibly through the use of a separate pocket dimension). During the daytime (more specifically, at or above a certain light level), it looks like a normal, abandoned cottage, but at night, the windows glow with a warm yellow light, and approaching it induces feelings of warmth and comfort. When entered, the interior appears to have shifted to match whatever place the subject entering considers "home" (in a familiar, from the heart sense, not a factual sense). The location of the SCP itself doesn't shift when in a changed state (although the interior view from windows can change), and only one person can enter at a time; the door locks behind them, and if anyone else tries to enter during the period the first person is inside, they'll just end up in the abandoned house, with no sign of the first person who entered.
If the house/building this SCP shifts to resemble has more levels / square feet than the house, these are also included, although the outside of the house never changes its appearance. Once inside, the subject doesn't register on any locating device, even if implanted with trackers, and can freely enter locations that don't conform to the SCP's standard dimensions
The house is fairly harmless (the only ill effects suffered by subjects once they leave are strong, lingering homesickness or nostalgia), and if the subject stays the night, they'll end up back in the abandoned house when the sun rises.
