Recs for Cancun area?

[babsbunny]

Hi gals. I think I have settled on Cancun for a short trip in May (four nights). I want to try all inclusive unless I have a great place with a kitchenette within walking distance of groceries. I'm debating between the hotel zone, playa Del Carmen, and isle mujeras. I know nothing about the area. My DH will want to run outside and we like moderate physical activities to compliment some beach time. We like a snorkel trip on vacations and we want one trip to some ruins.  I'm looking for lower-mid price (no Ritz) and will pay a llittle extra for an ocean view balcony. We do not care for fancy dinners nor clubs or bars, but we do like having dinner (like a pizza) on our balcony with a cheap bottle of wine.

If you have any suggestions on hotels or things to do (or things to avoid), I'm open to all comments. I hope to book something this week.