1.
two nights (of lodging); a two-night stay
Two nights spent away from home in paid or borrowed accommodation. Japanese counts trips by nights rather than days, so a stay is booked and described in 泊 first and days second.
二泊予約しました。
I booked two nights.
I had meant to stay one night, but I was enjoying it so much that I stretched it to two.
Related Words
Related:
連泊 (consecutive nights stay)