1.
one night's stay including dinner and breakfast
The standard accommodation plan at a Japanese 旅館 or resort hotel: one night's lodging with the evening meal and the following morning's breakfast included in the price. The two meals are dinner and breakfast, in that order, not lunch.
一泊二食付きで一万五千円です。
It's fifteen thousand yen for one night with two meals.
Related Words
Compare:
素泊まり (room only)
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二泊 (a two-night stay)
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夕食付き (with dinner included)