Currrent rules for short-term rentals

We've been outside LOS for about 3 years now, but coming back soon for an extended visit. Among other things, we are looking at a short-term rental in BKK near Swampy. That rental would be around 5-7 days. This is townhouse, not a condo tower. The owner says that renting 5 days is legit, but we have heard that rules have tightened up recently and that maybe 28-30 days minimum is required. Do we run afoul of the law to rent a townhouse for 5 days, and is there a chance we'll be prevented from occupying if we get reported by a neighbor or mgmt. We want to follow the rules and not take a chance. Thank you.