There is no "right" color temperature that we can tell you over the Internet. Your brain looks at everything you can see, and decides what "white" is based on that. That's why colors look "right" to your eye no matter the conditions, but look terrible when you take a photograph.
The proper color temperature is the one which most closely matches your ambient lighting.
■ If you're in a room at night with incandescent lighting, "warm" is going to look right.
■ If you're in a room in daytime with sunlight streaming in the window, "medium" will look right.
■ If you're in a room in daytime with clear blue skies but with no sunlight coming in the window (room is entirely in the shade), "cool" is going to look right.