|Impressive cliffs, right?|
I suppose Guigui (pardon me for not going into all that umlaut nonsense from this point on*) is Gran Canaria's equivalent of Cofete beach on Fuerteventura. Although it is nowhere as large or as beautiful, it has one very important advantage - you can swim there reasonably safely without being swept into the ocean, never to be seen again.
One disadvantage (although it is debatable if this is indeed a disadvantage) is that Guigui is even less accessible than Cofete. There is no road at all; your choice is either walk or go by boat. Going by boat is expensive; plus, there is absolutely nothing at all on the beach, no bar, almost no shade in the second half of the day, zero, zilch, nada. And, if you decide to extract the maximum value out of the boat ride both ways and stay there for at least three hours you will end up severely sunburned and quite possibly really, really bored.