Are you planning to settle in Singapore and by the time you identify a permanent home or buy a property, you must be in need of short term rentals. In Singapore, the government stance for short term rentals firstly is that the HDB flats and the private residential properties must not be given as short term rentals.
The aim is that the new occupants may cause nuisance. Even if subletting is allowed, as per the rules of the HDB, it must be let out at least for six months. It is a must to comply with the guidelines of the government.