Vocal Reverb options for 2.1.1

Hi, I’ve recently recorded some vocals accompanied by the piano in Audacity. I just wondered if anyone has any suggestions with what effects to use when editing it? (especially some reverb options)
I’m after a natural but polished effect, especially looking at the reverb. I headed online to look for some reverb options but they seemed to very different to the options I had available to me on the mac. Any advice/options would be much appreciated.
If anyone has any plugins they suggest would they be kind enough to explain how to use they haha! (i’m clearly an amateur)
Many Thanks,

An obvious option: http://manual.audacityteam.org/o/man/reverb.html