Lang Co is an attractive island-like stretch of palm-shaded white sand, with a turquoise lagoon on one side and 10km of beachfront on the other. As a beach resort it's more geared to Vietnamese day trippers than Western travellers, but if the weather's nice the ocean is certainly inviting (if you stay away from the central section, which could be cleaner). High season is April to July. From late August to November rains are frequent, and from December to March it can get chilly.
Once upon a time, Mui Ne was an isolated stretch of shoreline where pioneering travellers camped on the sand. Times have changed and it's now a string of beach resorts, which have fused into one long coastal strip. These resorts are, for the most part, mercifully low-rise and set amid pretty gardens by the sea. The original fishing village is still here, but tourists outnumber locals these days. There are a handful of luxury hotels (and a smattering of cheap guesthouses) but Mui Ne is mainly a midrange resort.
Despite enjoying a stunning position on the cusp of Halong Bay, where its high-rise hotel developments dot the shoreline, most travelers opt to skip Halong City, preferring to spend a night out in the bay itself. As such, increased competition for a dwindling clientele means the budget hotel rates here are some of the cheapest in Vietnam.
Plonked about midway between My Tho and Can Tho, Vinh Long is a major transit hub and the capital of the province. For travelers, it's a gateway to island life, Cai Be floating market, abundant orchards and rural homestays.
Ha Tien may be part of the Mekong Delta, but lying on the Gulf of Thailand it feels a world away from the rice fields and rivers that typify the region. There are dramatic limestone formations peppering the area, which are home to a network of caves, some of which have been turned into temples. Plantations of pepper trees cling to the hillsides. On a clear day, Phu Quoc Island is easily visible to the west.
Rugged, craggy and jungle-clad Cat Ba, the largest island in Halong Bay, has experienced a tourism surge in recent years. The central hub of Cat Ba Town is now framed by a chain of low-rise concrete hotels along its once-lovely bay, but the rest of the island is largely untouched and as wild as ever. With idyllic Lan Ha Bay just offshore, you'll soon overlook Cat Ba Town's overdevelopment.
Ho Chi Minh City (HCMC) is Vietnam at its most dizzying: a high-octane city of commerce and culture that has driven the country forward with its pulsating energy. A chaotic whirl, the city breathes life and vitality into all who settle here, and visitors cannot help but be hauled along for the ride.
Northeast Vietnam includes Halong Bay, one of the region's biggest draws. Reasons to linger after your boat trip include the lesser-known but stunning Bai Tu Long Bay, the intersection of nature and culture that is Ba Be National Park, the otherworldly karst landscapes outside of Cao Bang and the urban options in Haiphong.
The ‘rice bowl’ of Vietnam, the delta is carpeted in a dizzying variety of greens. It's a water world that moves to the rhythms of the mighty Mekong, where boats, houses and markets float upon the innumerable rivers, canals and streams that criss-cross the landscape like arteries.
Beyond the urban buzz and excitement of Ho Chi Minh City, the attractions of the surrounding region include fascinating cultural and historical sights such as the Cu Chi tunnels and the Cao Dai Holy See temple at Tay Ninh. Also worth exploring is the Unesco-accredited area around Can Gio, especially the extensive mangrove forests that were an integral part of the Viet Cong resistance effort during the American War.