Good luck with the knee surgery, been there done that!! We were on Rue Massena just a block from Massena Square and the large Promenade du Paillon. Also 4th floor, elevator and a great little balcony with electric awning, perfect! Great restaurants/cafes and shops all around us. The large promenade is the border to Old Nice. It's a great location because it's just a couple minutes walk to the beach and same to Old Town. Take water shoes to the rocky beaches, it was fun to watch people hobble in and out of the water and I know I made people laugh when I struggled walking in and out! Car rentals were only a block away as well.