We (2 adults, 2 kids;6yrs,1.5yrs) spent a week in the beautiful and very roomy apartment of Luis and Ana Maria. It was very nice. At first we had a little trouble to find it, but Luis helped us out. He was very friendly and always there if needed - thank you very much! Advise: study the plan that Luis sends you!
The Apartment is great an has plenty of space. It has everything you need from dishes, coffeemachine to blender. The internet is fast and always worked. The beds were good. The view from the livingroom is unbelieaveble, I got the feeling of beeing in the ocean.
The beach is small but wide, good for a little jogging, swimming, Yoga, building sandcastles or enjoying the beautiful sunset (walk west to the rocks with all the pinguins). There is also a pool, but most of the time it was to cold to use (that's a summer thing I guess).
There is a small town just 5 Mins away - I still can't prononce it, but there you can get everyting needed, about 15 Mins away lies Progreso and 30-45 Mins (depending on traffic) ist Merida.
We had a beautiful stay - Thanks Luis and Ana Maria!