Hey John !
Nice chat the other day.
When i signed, i stayed in a private apt. in La Zenia, the kettle/iron etc was choked full of white limescale.
I think the same would be at Punta Prima area, so while at La Recoleta, we are using bottled water in our kettle, cooking and iron.
Bottled water is cheap anyway !
Have a nice trip, take care,