佐々木：素晴らしいプレゼントありがとう。久しぶりにぐっすり眠りました。
加藤：それは良かったですね。今日はお顔の色もとてもいいですよ。
Gussuri nemuru
Sasaki: Subarashii purezento arigatoo. Hisashiburi ni gussuri nemurimashita.
Katoo: Sore wayokatta desu ne. Kyoo wa o-kao no iro mo totemo ii desu yo.
Sasaki: Thank you for your wonderful present. I had a really good nighfs sleep for the first time in ages.
Kato: I'm glad to hear that. Your color is healthy today, too.
There are lots of onomatopoetic expressions to do with sleeping in Japanese. Gussuri nemuru means to sleep well, or to get a good night's sleep. Suyasuya nemuru (To sleep peacefully) , and Guuguu ibiki wo kaku (To snore in a loud voice) are two more common examples.
I've really been bogged down with work lately. On top of my classes at university, I'm working on writing a dictionary, and I often end up staying at my office until late in the evening.
Undoo-busoku no tame ka, beddo ni haitte mo, nakanaka gussuri nemurenai (Perhaps it's because I haven't been getting enough exercise, but even when I get into bed I can't manage to sleep well.) And when I do finally begin to fall asleep, the sky is already getting light in the East, and I can hear the sound of birds singing. Aa, kyoo mo gussuri nemurenakatta (Ah, I couldn't sleep properly today, either). I think to myself, as I set off to the university in a half-dazed state.
Gussuri nemuranai to, genki ga demasen yo (If you don't get a proper nighfs sleep you'll never have any energy), one of my colleagues told me, and gave me a special kind of pillow as a present.
When I first opened it, I was surprised to find a strange looking pillow inside made of a sponge-like material cut into a wavy pattern with lumpy bits on the back. Finding the instruction leaflet, I read, "With ordinary pillows, your neck, shoulders and spine are all strained. With this pillow your neck is supported naturally and your spine stretched out straight "
Gussuri nemuritai isshin de kono makura wo tsukatte mita (I wanted to get a good night's sleep so badly that I gave the pillow a try). To my surprise, within 30 minutes I was sound asleep.