I know two well very qualified western nurses (unknown to each other and at different times) who left the American hospital after only a few months each. Both because they felt professionally compromised, for example being required to work outside their area of competence etc. Pay, working hours and overtime requirements are also inferior to what you may be used to. The shiny presentation certainly looks good but like many things in Dubai under the surface it has its problems. Don't rely too much on the opinion of friends you may have who work there, there is a tendency as an expat to 'talk up' the experience to justify their own decisions.
Having said that it is a nice modern building.