Formal — to staff
Convenience · Store
すみません、お湯をいただける場所はありますか? — Excuse me, is there a place where I can get hot water? (Convenience · Store, Formal — to staff, JLPT N4)
You
すみません、お湯をいただける場所はありますか?
すみません、おゆをいただけるばしょはありますか?
Excuse me, is there a place where I can get hot water?
Romaji: Sumimasen, o-yu o itadakeru basho wa arimasu ka? / Reply Romaji: Hai, sochira no reji yoko ni kyūtōki ga gozaimasu.
Reply
はい、そちらのレジ横に給湯器がございます。
はい、そちらのレジよこにきゅうとうきがございます。
Yes, there is a hot water dispenser next to that cash register over there.
Gesture & etiquette
Point to instant noodles if carrying them, or make a pouring motion.
Don't assume all convenience stores have a hot water dispenser, especially smaller ones. Always ask before pouring.