Translation of "appreciated" into Japanese

I appreciate your kind letter.

親切なお手紙を有り難うございます。

As with all of us, they would appreciate a well-designed product developed for their needs.

自分達の要望に沿って 開発され 適切に設計された製品を 有難いと考えるのは私達と同じでした

I would appreciate it if you could reserve a room at a convenient location for visiting your office.

貴社に伺うのに便利な場所の部屋を予約できればありがたいのですが。