If you look for a place to relax and enjoy the silence I highly recommend Quinta Erica. The place is owned and lead by a German emigrant and his Mexican wife. He built a amazing place with nice little cabanas, a open air shower and pool. Everything is nestled into the nature around and looks like a unit.
The lagoon is directly connected with the hotel and to reach the beach you just have to cross the street.
His daughter Erica is serving the breakfast which one for such a kind of b&b places delicious and fair enough. For lunch we went along the beach and choose some of the cousey small restaurants who serving you fresh fish and ceviche as well as a cool bear.
We took a cap from Acapulco what cost maybe 200 Pesos. To return you can take a collectivo what comes along the street every couple of minutes. It will take you back to the center of Acapulco and cost around 5 pesos per person. More