It's pretty volatile at the moment (as you are aware).
Generally the protests are centered on the Interior Ministry in the capital Tunis.
The ministry is situated on Avenue Habib Bourguiba, a central boulevard in the heart of the capital. Several hotels are nearby including Hotel Carlton, Hotel Africa, El Hana International and Hotel Tej Tunis. Stay away from that area if you can.
If you are in Tunis you should use caution while travelling in the city centre and avoid all public gatherings.
Check with local authorities and hotel staff about the situation and to determine potential trouble spots before heading out for the day. about 5 years ago