If you need a rest after a long journey, or you have to wait quite long for your next connect flight. You can stay in the Transit hotel which is located on the 3rd floor of both terminals. The hotel actually got excellent remarks from passengers who had stayed there, mostly because of the free facilities and services; such as the swimming pool, saunass, fitness center, and a free tour around Singapore. But that's not all, they say the condition of the rooms are clean and comforting. That's almost everything, isn't? I am impressed.