Q le aplica.....me podría decir
He (Which should be El, but anyway) visto is not correct, because you are talking about someone else. Yo Tengo is correct, because you are staying that you have seen.
Answer:
To get to the cafeteria, first, you go left out the door. Then you go right at the end of the hallway. Keep walking down that hallway and you should pass the office and go left through the glass doors. Then, that leads to a small hallway with another set of glass doors, go through them and thats your destination.
Translated:
Para llegar a la cafetería, primero, ve a la izquierda por la puerta. Luego ve a la derecha al final del pasillo. Siga caminando por ese pasillo y debe pasar la oficina y pasar a la izquierda por las puertas de vidrio. Luego, eso conduce a un pequeño pasillo con otro juego de puertas de vidrio, atravesarlas y ese es tu destino.