I agree with all of this.
The bus is frequent and easy. I stayed in El Zonte and took the bus every day. No idea why some are .50 and some are $1.50 but it says on the side plainly enough.
I like the vibe in El Zonte best but El Tunco is probably more fun for the 20-30 crowd.
A ~20 min cab ride to La libertad at night is about $30
🍻🧡👊🏻