Being in the condo rental business we get a lot of enquiries from people asking to rent a condo for maybe a few days or a few weeks. We have to say 'No, we cannot help'.
We appreciate why they ask, it is because renting a condo for a month is a lot cheaper than staying in a hotel room of the same standard (normally) for a month.
We say we cannot help not to be awkward, but because it is against the law for a condominium owner or office to allow such short term rentals. However, there are places similar to condominiums that are allowed to make short term rental deals, normally called apartments, and of course hotels. This might seem strange but the law is the law.
In the past a blind eye was turned with respect to this law, but now policy has changed and the authorities are enforcing the rules. In fact some condominiums have signs in their lobbies notifying people that the building is not a hotel and short term rentals are not allowed. One such sign is shown here.
The reasons we have been given for the change of enforcement policy is that hotels were losing revenue; and the Immigration Police were not being notified of a foreigners place of residence. The Immigration Police should receive such notification within 24hrs of the foreigner moving in. In addition actual long term condominium residents were upset at how strangers in their community came and went after a few days with little respect for others.
So if you want a short term rental, say of 3 or 4 weeks, I suggest you search Google 'short term rentals in....' and see what you get - or book a hotel :)
Update: May 2019 There are reports that enforcement action is increasing against both owners renting condos for up to 30 days at a time, and renters.