Hey buddy, not sure if you figured it out yourself, but you were nearly there. To move the player to a random point in the same room you'd have to do:
{move-avatar {random 0 16}{random 0 16}}
You need to do it twice for the X and the Y value of the player's position.
For teleporting them to a different room, it's probably best to do something like:
{set-var randomRoom {random 0 6}}
{if
{eq
{var randomRoom}
2
}
}
{move-avatar room2 {random 0 16}{random 0 16}}
{/if}
And then do an if statement for all the potential room they could get taken to.