お勧めは何ですか。
I recommend this piece.
Please let me know if you have any recommendations.
Which is your recommendation among this?
おすすめです
to encourage someone to have another helping of food
ほめて勧める
to recommend something to someone
Please tell me your recommended places.
to recommend something as being worthy of trial or acceptance
to persuade one―prevail upon one―(to do something)
It is no use trying to persuade that man.
on your recommendation