What do you call a cruise boat that’s also a hotel? South Australians call it the Boatel – a new concept in luxury holidays on the Murray River. Based in Mannum, an hour’s drive north-east of Adelaide, the Boatel melds luxury comforts with the fun of a river-cruise holiday. It sleeps up to 10 people and has a commercial-style kitchen. A day in the Boatel costs $1500, not including catering and fuel.