The service at that restaurant is [isn't] good./You get good [poor] service at that restaurant.
彼は家庭サービスをよくする
He 「spends a lot of time [does many things] with his family.
2〔販売した商品の点検・修理〕
アフターサービス
after-sales service/servicing/repair service
3〔値引きすること〕
2割サービスしましょう
I'll give you a twenty-percent discount./We'll take twenty percent off.
当店は大サービスをしております
We offer 「good prices [big discounts].
これはサービスです
〔店で景品を添えて〕This is a little something extra./I'll throw this in for free./We charge nothing for this./This is free of charge./〔旅館などで〕This service is free.