Cocotal is very nice and the security is fantastic, so i am told.
However someone did mention to me as i am looking to move there myself that it is mainly apartments, but like i said i am not sure about that information. Look at Palma Real Villas which is part of the same complex also.
Cocotal is situated near El cortecito a nice little sea front village and also near Fuisa where you will find banks, minimarkets (expensive and limited), bars etc.
However the town of Higeuy is about 45 min drive away where you can find supermarkets and pretty much everything for your home at much more resonable prices than Bavaro.
There are a few bilingual schools and playgroups near by also if required.
Until i go and look myself at Cocotal itself i can not really give you much more information than that.
Good luck