There’s no documentation on the specific length, but the max I have seen is length 255. This corresponds to address 488 Srinagarindra Rd., Suan Luang, Bangkok, 10250. You can check the place id here.
FYI the place id is:
ErwBNDg4IOC4luC4meC4mSDguKjguKPguLXguJnguITguKPguLTguJnguJfguKPguYwg4LmB4LiC4Lin4LiHIOC4quC4p-C4meC4q-C4peC4p-C4hyDguYDguILguJUg4Liq4Lin4LiZ4Lir4Lil4Lin4LiHIOC4geC4o-C4uOC4h-C5gOC4l-C4nuC4oeC4q-C4suC4meC4hOC4oyAxMDI1MCDguJvguKPguLDguYDguJfguKjguYTguJfguKI