"I am by the pool."
Translation:Jestem przy basenie.
That would be "w pobliżu", but it's too general anyway. "przy" means that you are standing right next to it, really quite close. "W pobliżu" is very relative. If the swimming pool is 50 kilometres from your house, you can say "jestem w pobliżu basenu" and mean that you are 3 kilometres from it.