Alprazolam: Warning...negatives follow. Don't read if it'll hurt your anticipation of your trip.
Yeah we spent a week there between Christmas & New Year, really warm even then. It's sort of a huge natural amphitheater, with a crescent of mountains curved around a large scenic bay.
Stayed high up in magnificent ocean/mountain view room in a great beachfront hotel. Our best memory is a private van trip we hired to drive all day out of the city, far into the outlying palm tree jungle.
Also had pleasant day at a cove beach just south of Alcapulco Bay.
The best, but expensive, place is Las Brisas on the hill at south end of Alcapulco bay. We ate there, & I recommend it. I also saw another place called Princess, on the beach outside of Alcapulco Bay to the south, & heard it's good.
Our first night the hotel charged us USD $12 for 2 liters of bottled water. Buy your water, food items, etc. in a big modern store on the main boulevard along the bay, where they don't charge a "special" price for touristas. You can get to the supermarket by squeezing onto public bus on which you stand straddeling the big rusted-out hole in its floor, as you watch the street passing under your feet.
In a top restaurant, our waiter covertly poured out the expensive wine, refilled bottle with rotgut wine, replaced cork & served to us. He didn't know I saw him doing it as I walked to the restroom. That episode conveys the prevailing attitude of the locals toward you, the visitor.
When my girlfriend politely asked directions (in Spanish to show them respect) people usually misdirected us, seemingly on purpose.
Carry a small calculator. Money changers cheated us every time.
Even the government departure tax collector was cheating (overcharging) people at airport departure gate. A bunch of us victims awaiting our plane went back as a group & confronted him. Ugly, but he caved & gave back $.
Took a sightseeing boat ride, vendor boats constantly pulled along side to sell food & trinkets. Lay on beach & people swarmed in our faces selling stuff. Lots of them were small (say age 6 or 7) kids who give you evil face when you say "no."
The Alcapulco cliff divers were standing there dripping wet begging money from the tourists after the show.
Powerful gaudy colored lazer lights were shooting over the bay all night every night, no mercy. The bay stank pungently of raw sewage runoff after the frequent warm rains.
If you're single, the main thing to do might be to connect with other visitors from different parts of the world. There's a night life club scene there.
Sorry for the downer comments, but I'd NEVER want to visit Alcapulco again. It was probably tropical paradise a couple of generations ago. Now it's overwhelmed by drastic overpopulation of impoverished peasants who live by exploiting touristas.
Our last days there my stunningly beautiful girlfriend got deathly sick, I didn't.
Give me Fiji over Mexico.