One Night's Stay
noun, verbal noun, の adjective
One overnight is a one night's stay.
いっぱく
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own. Watch out for the shortened 一 and the rendaku in this one.
ねぇ、そう堅いこと言わないでさ。うちに泊まってけばいいじゃん。たったの一泊だけだよ。
Come on! Don’t be so stiff. Stay over at my place! Just for one night!