My 2 cents worth..
If you are looking for a view of the Ocean try and get the room on Bldg A # 606. Call them couple of days before you go there and request the room, 606, 605 or 604. Mind you , you will have to walk a little from the enterance to your unit.
Try and rent a car for few days( Stay away from the Alamo, I had terrible exp with them). There are some side trips only an hour or so away from MZT, worth going to. On the way try and find little Mexican restaurants. We had the best Bar-B-Q chicken there. Our Family of four eat there for less than 100 pessos. Change your money at banks only bring your passport with you otherwise they would not do it.
Take a free shuttle to EL Morrow towers and walk a little ,lots of places to eat drink and shop.
Try and go to Downtown ( Centro) Very beautiful cathedral there, lots of history in this town. Walk around the Plaza and the Machado(?) area. There is very good Market also few blocks away. Bargain most of the time. If you like Mexican food like tacos . They are different than Taco Bell here. Go to place call Taco Luna. They sell Tacos for 11 Pessos , 2 or three will feed you. Try their staple drink called Toni-Cal. It is coke with Vanila in it. Right next is Panama rest and Bakery. They are reasonable and excellent.
Mexican people we encountered are very friendly and warm. They are very honest. Couple of times I gave extra money by mistake, but they returned them. When you changed money get 10,20, and 50 pessos. Everyone there survives on the tips ( Maid works all day for 70 pessos) Tip generouly if you can afford it.
We stayed away from American style restaurants as we wanted to experience the true culture. Look for a place call La Coasta Marinara. They have a decent food with singing waiter. We did the tour with El cid, if you like going through torture take it. When they pick you up at the airport they will sign you up for it. One spouse to keep refusing, they will up the gifts....
Can write a lot, if you need to talk write me a private message.
Please bring a wind breaker or such, it might get cold at night.