I can help as my family have been going there for many many years (over 20!), although I only really know the coast north of Almeria City (there are other resorts in the south, too).
It's still relatively unspoilt, compared to much of the Spanish coastline, and has some nice unspoilt beaches, although they're not all great. But there's not a huge amount of culture (although you can drive up to Granada, and there are some good Moorish castles around - and some excellent Spaghetti Western sets...), But more importantly it will be very hot in August, so if you've got small kids might not be ideal.
Will you be buying a package or sorting something out yourself? If you're buying a whole holiday, some of the Mojacar beach resorts are probably your best bet; if you're renting a villa, then try and go for Agua Amarga, which is a lovely little fishing village in a really pretty cove - great beach and nice food too!
If you've got some places in mind, feel free to run them past me, and I'll see what I can remember...