How long can one stay in Singapore without requiring a work visa or other such accommodation? Could you, for example, sublet an apartment for a summer, or even a year, and have access to insured medical services or other necessities during that time?
Edit: In response to the first comment I will attempt to clarify. I guess what I'm asking is how long does a tourist visa last, how many times can it be extended and how hard is that to do? Additionally, I am from the US.