'the end' can also mean 'the furthest part'. Here the hotel industry has two 'ends' or 'furthest parts'. One is the economic or low-cost (the cheapest hotels), the other is the luxury or (high cost hotels).
So 'the economic end' of the hotel business is referring to the furthest or cheapest part of the hotel business. And 'the luxury end' of the hotel business is referring to the furthest part in the opposite direction - the high cost hotels.