Another quick question. If I'm taking a taxi to the city center, what should i tell the taxi driver as a landmark? I don't want to get ripped off

. I've been there before and I know the city center is not that large, but want to be able to give an 'address' to the driver so I'm at the beginning of the 'main drag' I know the barrio alta is up the hill to the right as you are heading to the center, but want to be dropped off so we can stroll a bit and find a quick bite to eat. thanks!