When you go into the business of rentals of a duration of less than 6 months, you are subject to the provisions of the "Hotel Act". The BTB is a government agency that oversees the hospitality industry, and it must approve your establishment and grant you a licence under this act. The BTB has several categories of licenses, including "Villa", "Lodge", "Hotel", "Guest House", etc.
BTB publishes a booklet that sets out information on "minimum standards" for each type of establishment and the kinds of activities and facilities it takes to be called one thing or another.
You are supposed to inform BTB (Registrar of Hotels) prior to construction if your intent is to engage in the hospitality industry. Do some homework - you will be glad you did.