Formal — to staff
Ryokan · Minshuku
すみません、布団はいつ頃敷いてもらえますか? — Excuse me, about what time will the futon be laid out? (Ryokan · Minshuku, Formal — to staff, JLPT N4)
You
すみません、布団はいつ頃敷いてもらえますか?
すみません、ふとんはいつごろしいおてんもらえますか?
Excuse me, about what time will the futon be laid out?
Romaji: Sumimasen, futon wa itsugoro shiite moraemasu ka? / Reply Romaji: Kashikomarimashita. Go-yūshoku go ni sugu o-heya ni ukagaimasu.
Reply
かしこまりました。お夕食後にすぐお部屋に伺います。
かしこまりました。ごゆうしょくごにすぐおへやにうかがいます。
Understood. We will come to your room right after dinner.
Gesture & etiquette
Polite bow, maybe a subtle gesture towards the sleeping area.
Do not try to lay out the futon yourself unless explicitly told it's a self-service arrangement. It's part of the ryokan service.