Hiya went to tunisia with my wife and then 3 yr old son in 2006, loved the hotel (sahara beach hotel) skanes but didn't much like the country. its nice to say weve been and tried it but wouldn't rush back unless we stayed in our resort.
sousse and monastir are nice but there's only so many times you can visit the same place in 2 weeks. 1 week would have been better.we chose tunisia because our complex in kos had'nt been built in time and wish we'd gone elsewhere.
saying that the hotel was spotless and well cared for.food was lovely etc and entertainment was good
the country itself is a scruffy looking poor desert community with half built houses everywhere (a bit like spain really)
there are some nice places to visit such as Tunis the capital if only it was nearer.
The market area in sousse was bigger and better than monastir but you still don't feel safe unlike turkey where they have a similar way of life but much more friendlier and safer.
we went in june and it was far too hot. people were fighting for shaded areas in the afternoon as it was just too hot to be in the sun - we usually had a siesta in our room.
like i said the hotel and staff was fantastic but the rest of the country let it down.
this is of course only my opinion and others may differ but many people ive spoken to tend to agree.
with a 4 year old i'd choose turkey any day over tunisia