Not sure this belongs in the Mexico yoga retreats category because it's not entirely focused on yoga. But maybe thats what you're looking for! A luxury all-inclusive hotel offering daily yoga classes. (Mainly Sun Salutations). If you’re looking mainly for an all-inclusive resort that has yoga classes rather than a hard core, yoga intensive this could be the place for you. It's ocean front so your beach access is convenient. There are four restaurants on site, so that should give you an indication of the size. They also have a spa onsite.
Reviews: This luxury hotel has a 89% rating and is ranked 13 out of 81 hotels in Zihuatanejo. With 430 reviews there is bound to be some negative reviews, some of the not so good things mentioned were: high prices (know what to expect) Some things were in need of repair, some of the staff were not as attentive as they should have been. Some of the positives: very romantic and magical feel, food is good, private beach is beautiful.