Back in the mid 90's we used San Carlos Marina Seca, Marina Real, and a Guaymas shipyard.
The boat was dirtiest in the shipyard with a summers worth of other boat's bottom paint
overspray even INSIDE our boat!
Upon return, our boat was the cleanest when left in the water at Marina Real (San Carlos). We thanked the staff for detailing the boat and they said no, it was just summer downpours. The teak
decks looked new !
Marina Seca is good especially if you want to do bottom work.
The staff was knowlegeable, and work quality was good.