My partner and I traveled with our own motorcycle from Switzerland trough Tunisia. Therefore we are used to waiting and difficult conditions.
Since we took a room just when we arrived we might have payed more than when you book an all inclusive week. But we don't recommend this anyway! Paying 100-150 USD for a night for both is just a scam!
The rooms were clean and nice and the A/C worked. The breakfast was very poor: Crackers with butter and jam. The orange juice was more an orange liquid than a juice. We expected more for the price.

The staff was nice when I checked in and allowed me to put the bike in the basement. When the disco right in front of the room was still playing loud music after 11pm I couldn't sleep. So I went down to the reception to ask them if they could stop it. They told me they would turn of the music after midnight. 30 minutes past midnight I went down again and the answer was: "Ohh we turned the music off, I didn't say anything about the restaurant in front. (funny thing is that the restaurant is part of the hotel)".

For the pool you have to pay an extra fee (which I don't remember).
I sincerely regret every dollar I spent in this night.

My recommendation: Bizerte is a lovely town and the corniche is just a tourist scam that should be avoided also for an all inclusive week!