Khuzestan is one of 30 provinces in Iran.
Traffic is really chaotic, not as bad as Tehran, however, I would not recomend driving ones own vehicle here. Taxis are cheap and probably the best way to get around the city. The heat is really infernal. In August it reaches more that 50 degrees which, believe me is rather hot! Not really possible to walk in the streets at peak hours as there is no way one can resist.
Iran hotel has a reasonable restaurant where u can dine with confort and AC. Not bad too stay either. Prices are good, but, make sure u get a room on the fourth or fight floor as floods 3 and 2 are almost in ruins. The majority of the rooms have Asían latrine, so be prepared to bend your knees. Staff speak little or no english.
In Ahwaz everyone is keen to help you, but english is not widely spoken. There r no europeans so people do tend to notice you.