Where to stay in Z for ten days?

Other than budget you don't give a lot of info to go on - likes and dislikes, preferred activities -but my suggestion would be to split your time between two places; a cheaper place on the beach like the Catalina and a more expensive, more luxe place like Casa Que Canta, Amuleto, Quinta Troppo, or another smaller boutique hotel. You stay within your overall budget and you experience Zihua and La Ropa through both a classic old-time hotel and a modern upscale boutique hotel.

Just a thought.