For food & drink, Port of Nice (Port Lympia) is hit or miss.
A photogenic basin ringed by tall pastel facades, mixing superyachts, fishing boats and the Corsica ferries, with good restaurants and an antiques quarter behind it. Less touristed than the old town and pleasant to wander — but it's a 'nice area to be in' rather than a sight, and there's road noise around the quays.