Dubai is probably the only city where you would want to own a luxury home in the Middle East,
I say this because along with any luxury home, you need to have access to a luxurious and lavish lifestyle, and there is no better place than Dubai to do so with the grand shopping malls full of luxury brands, and the many fine dinning, and nightlife experiences that are available.
Also, and the most important one of all, is security! Dubai is extremely safe which is obviously important for anyone, but much more important if you have money in the middle east (where security could be turbulent in many Countries); But not the UAE, fortunately.
You could probably let your dog walk around alone at night wearing a Rolex, and nothing would probably happen, and even if anything does, the police are quite efficient with matters such as theft,and city is well monitored, so you would find that watch within 24 hrs.
Its also relatively easy to do business in the city and it has a good infrastructure for export/import + its a business hub, so you could probably set up your second office there, or make it your HQ if you enjoy the lifestyle.
Therefore, if you are looking into the Middle East, there is probably no better place to buy a luxury home, than in Dubai.