Yes, Vikram is right . It is better to take a cab from airport.
Charge will be between 30~40 AED depending on the terminal your arrive.
Please have complete address with you as many taxi drivers are not aware of this hotel.
You can tell the driver that saffron is near avari hotel.
If you do not have much luggage then you can take metro (red line) too and get down at Al Rigga station. It is around 300 meters from there.
Get an answer from Saffron Hotel staff and past guests.