Originally Posted by
OskiBear
Not sure of the hours, but there’s a place just down the street from the Park Hyatt called Cambio Posadas (or Posadas Cambio) - it’s opposite Fervor and El Sanjuanino. Very clean, tidy. If you are a foreigner, they may ask for a passport to verify but will give you a good rate. I think I was given around 209 per USD the other day.
Found that place, it's closed until Tuesday (extra long weekend right now) but we will def head there! I changed at 1USD to 200 ARS which is not the best but it was safe and easy, we still have lots of cash to change so will do so there and report back.