Port Ghalib is not an old Egyptian town. It is a purpose-built marina resort on the southern Red Sea coast, a few minutes from Marsa Alam airport and far quieter than Hurghada. That limits its local character, but makes its appeal simple: easy logistics, warm water, and access to reefs that see less pressure than the northern resort coast.
The marina is the centre of the place. Dive boats, liveaboards, cafes, and resort promenades cluster around the water, with the desert beginning almost immediately behind the hotels. If you want markets, street life, and temples, go elsewhere in Egypt. If you want a soft landing for snorkelling, diving, and southern Red Sea boat trips, Port Ghalib is useful.
The best days here happen offshore. Marsa Mubarak is close enough for a half-day snorkel with turtles and occasional dugong sightings, while experienced divers use Port Ghalib and the Marsa Alam coast for longer trips to reefs such as Elphinstone. The resort itself is not the destination so much as the dock.