Is the temperature in a room dependent on the room's contents? See details.

For the purposes of this exercise, let us assume that the room is at room temperature, and perfectly insulated; there will be no heat coming in from or escaping to the space beyond it.
Now let us introduce a block of ice into this hypothetical space, which subsequently melts.

Does the room’s temperature decrease in accordance with the amount of ice that was melted, and remain lowered as a result?