Few hotels in the world actively encourage guests to have sleepless nights, but a manga-themed establishment does just that — and it is proving very popular with Japanese and non-Japanese alike.

The Manga Art Hotel in central Tokyo has developed a unique offering, with capsule-like rooms built into specially curated manga-stuffed bookshelves.

"It is specifically designed to allow guests to concentrate on reading manga," said Masayoshi Mikoshiba, the 34-year-old co-founder of the hotel's operator, Dot Inc.