Greta:
Due to your injury, perhaps you should ask for one of the ground-floor apartments at All West to minimize stair climbing.
Also, the diving behind All-West utilizes a long set of steep stairs to get down to the shore, but you can also take a 1- minute drive down to the the fishing pier and the entry there is easy. Just ask and anyone can show you where it is.
Plenty of easy entries to be found on the island, but one thing to watch for, depending on the state of your recovery, is that you might want to look for "beach" entries such as those at places like Cas Abou and Porto mari where the entry is over more sand than coral rubble. It might be easier to maintain a footing if you are having stability issues, which you might be with that kind of injury.