Recently offered a job in a medical centre in dar es salaam

Hi  I have been recently offered a job in a medical centre in dar es salaam . Following are the job details :-

  Salary: 3500 USD + Accommodation, Transport, Health benefits, Airfare to home country (once in two years)

I dont have much idea about dar es salaam.  I will be leaving alone in dar es salaam. I will be leaving a simple lifestyle . I do not drink or smoke . What is your advice about the offer ? And  are their any additional questions that I need to ask the employer ?
Your early response will be highly appreciated.

It is a good offer but make sure that you get paid in USD.

The Shilling fluctuations are killing everyday and transfer of funds to india will become a challenge.

All the best.