'am waiting downstairs'
meeting with someone to go somewhere
when speaking to someone u say only. "te espero abajo".
Estoy esperandote debajo.. can be..
Te espero escaleras abajo. I'll wait for you downstairs.
Hi and welcome to the forum.
Because your profile doesn't say what language you speak or what language you are learning, I can't tell what you wan with this question.
Do you want us to explain it in English or translate it to Spanish?
reunión con alguien para ir a alguna parte- meeting with someone to go somewhere