Went to Da Nang in June. Really enjoyed a few days there, nice beach, nice beach bars, enough sights to keep occupied in the daytime (also have no idea about shopping, not my thing at all). Good to great food and places to drink. Nice hotels. Hoi An is really attractive and great for a day/evening trip from Da Nang, but was utterly rammed with tourists (see pic) on a regular weekday, but I'd go again for the place itself.