General Information:

Here the word "we" refers to Paul, the writer, and those traveling with them, but not to the reader. (See: rc://en/ta/man/translate/figs-exclusive)

opposite the island

"near the island" or "across from the island"

Chios is an island off the coast of modern day Turkey in the Aegean Sea. (See: rc://en/ta/man/translate/translate-names)

"we arrived at the island of Samos"

Samos is an island south of Chios in the Aegean Sea off the coast of modern day Turkey. (See: rc://en/ta/man/translate/translate-names)

Miletus was a port city in western Asia Minor near the mouth of the Meander River. (See: rc://en/ta/man/translate/translate-names)