Given the speed with which Hong Kong’s colonial buildings have been torn down, it’s fortunate that the old British marine police headquarters survived at all. The 19th-century white-stucco structure had been neglected for more than a decade. Most visitors to the bustling Tsim Sha Tsui area probably did not notice its elegant curving staircase entrance, set back from the neon and noise of Salisbury Road. Late last year the complex, known as 1881 Heritage (1881heritage.com), began reopening in stages, first with a few luxury shops. The main building, Hullett House (hulletthouse.com) now has a number of restaurants, a bar and a boutique hotel that opened last month. Perhaps most impressively, the renovation has been done with care....