וַיֹּ֨אמֶר הָאִ֤ישׁ הַזָּקֵן֙ שָׁל֣וֹם לָ֔ךְ רַ֥ק כָּל־מַחְסוֹרְךָ֖ עָלָ֑י רַ֥ק בָּרְח֖וֹב אַל־תָּלַֽן׃
"Sois le bienvenu, dit le vieillard; tout ce qui peut te faire faute, je m’en charge; je ne veux pas que tu couches sur la voie publique."
Sforno
ויפגע במקום, it happened that he came to a place he had not intended to go to at all. The meaning of the word המקום is that it was a place designed to accommodate travelers overnight. Every town had such an inn in its public square. This is also why the angels who came to Lot said (19,20) כי ברחוב נלין, “we will sleep in (the inn) in the public square. The same expression is also used in connection with the פלגש בגבעה in Judges 19,20 where we read רק ברחוב אל תלין “only do not spend the night in the public inn.”