Not sure when you're going but we have the Hyatt Regency booked for April for a couple of nights. Applied a suite upgrade award and as Globalist it should be a very nice stay. It's on the beach and seems fairly close to both Da Nang and Hoi An (and has a shuttle to Hoi An as well). Will post a review when we return in the Hyatt forum.
Yeah we're going in early March. Flights have been booked for ages but dealing with a emergency which necessitated an apartment move we never got around to booking a hotel.