Re Mezuzah: What is the definition of a Pundak and when does it apply?

Question

We learn in Shulchan Aruch, Yoreh Deah 286:22 - סימן רפו - מקומות החיבים במזוזה - that if you rent a house in Eretz Yisrael you have to affix a Mezuza immediately.

However, if you live in a פֻנְדָּק (pundak) you are exempt from affixing a Mezuza for the first 30 days.

כב הַשּׂוֹכֵר בַּיִת בְּחוּצָה לָאָרֶץ וְהַדָּר בְּפֻנְדָּק בְּאֶרֶץ יִשְׂרָאֵל, פָּטוּר מִמְּזוּזָה שְׁלֹשִׁים יוֹם. וְהַשּׂוֹכֵר בַּיִת בְּאֶרֶץ יִשְׂרָאֵל, חַיָּב בִּמְזוּזָה מִיָּד, מִשּׁוּם יִשּׁוּב אֶרֶץ יִשְׂרָאֵל.‏
^{וְהוּא הַדִּין לְשׁוֹאֵל בַּיִת דִּינוֹ כְּשׂוֹכֵר (בֵּית יוֹסֵף בְּשֵׁם הר''ר מָנוֹחַ וכ''מ בְּשַׁ''ס) .}‏

What is the definition of a פֻנְדָּק and when does it apply?

My guess:

A פֻנְדָּק seems to be like a motel where you rent a bed on a nightly basis.

Test cases:

Seems clear cut:

• Renting a furnished home - clearly renting and not a פֻנְדָּק, as you want the entire home, not just the beds.
• Youth Hostel: Seems to be a פֻנְדָּק since all you get is the bed.

Not so clear:

• Hotels: Could be a פֻנְדָּק since all you care about is the beds; you wouldn't complain if they upgraded you after a few days.
• Zimmer: Could be a פֻנְדָּק like a hotel, on the other hand, you'd be upset if they made you move across the village every few days, even to a better zimmer.

Any sources or educated guesses would be appreciated.

Answer 1

The source for this halacha is a gemara in Menachot 44a. There Koren translates pundak as a guesthouse while artscroll translates it as an inn.

For more on this topic see Does one really have 30 days to put up a mezuza outside Eretz Israel? and the sources linked there.