A very simple, straightforward and easy to set up short-distance teleporter. No fancy WarpPos or anything, this just uses plain sitting. The advantage is that it's easier to set up and get working than figuring out the coordinates or whatever.
Just rez the teleporter where you want its destination to be, move it around and get it in just the place where you want the person who uses it to end up. Touch it to save the destination.
Then you can pick it up again (don't get it confused with other copies in your inventory) or just move it in edit to the source location, the place where it is when the user sits on it. Touch it again, and that's it! As long as the distance is less than 300m; no calculating or figuring.
You can touch it again if you need to reposition it or reset it and start all over again. Very simple interface, just a touch is all it takes.
Modifiable to fit your décor, and copiable, so you only need to buy one for your whole house.