The lighthouse sits on the northern headland of the bay, reachable by a 30 to 40 minute walk from the port along the coastal path. It is still operational, and not open to the public, but the headland around it is freely accessible and the walk there is the point anyway. As you round the final corner and the bay opens up below you, the view back toward the port — the near-circular water, the promenade, the mountains behind — is the best available perspective on Puerto de Sóller. It is the kind of view that makes clear why the bay was historically important as a shelter and why people keep coming back.
The path from the port is clear enough to follow without difficulty, though the final section gets rocky. Go in the early morning or in the hour before sunset: the light at those times comes from the right angle for the mountains, and the heat in summer is manageable. Bring water. There is nothing at the lighthouse itself — no cafe, no facility — but the solitude is the other half of what makes it good. Even in July, when the bay below is busy with swimmers and boats, the headland tends to be quiet.