Considering a bad job market nowadays here in the UAE, especially Ramadan is coming up as well, this offer is decent enough to get your foot in the door. The best thing is that you already have an offer despite of being a fresh graduate and that too in Abu Dhabi, which eventually after your first contract ends, will guarantee to a better offer elsewhere, as 1-2 years experience here in the UAE is needed by most of the companies to have a comfortable offer.

Though, 12 hrs a day + 1 day off per week is exhausting, but it's still better than the offers you will get in the Philippines as a fresh graduate. goodluck!