I need help with the location of instatiated objects on the scene and correct interaction with this

Now I have script that creates mesh from the vertices I created. Than in this script I instatiate prefab with MeshRenderer and MeshFilter components on it and assign created mesh to this instatiated object. These intatiated-gameobjects should been teleports for player and when I enter into one gameobject it should teleport me to another. When I create instatiate-object I set it position to Vector3.zero for the correct location of mesh between created dots just like this

 GameObject mesh = Instantiate(Mesh, Vector3.zero, Quaternion.identity);

But the problem is that position of all created gameobjects with meshes is (0,0,0) in global coordinations and when I try to teleport it always moves me to (0,0,0) position. I realize that reason of that is maybe in setting gameobject position to Vector3.zero but when I try to set position to another (such as first vertice or player transform) it moves Mesh far away from the desired position.

So my question is: how I can correctly locate instatiated gameobject so that it have global world coordinates? P.S Dot in red circle is one of the created vertices of which mesh is made. It position is (32, -19, -104), but position of instatiated object is (0,0,0)