We are a family of 5, traveling in June looking for an apartment in the Pantheon area, any suggestions on where or how to find one?
VRBO.com allows you to focus on a neighborhood, then by date look for something that meets your needs.
We got a great apartment (in the nearby Trastevere neighborhood) thru VRBO's sister Website, HomeAway (www.homeaway.com).
Also check out Vacanze in Famiglia (http://www.vacanzeinfamiglia.it/?lang=en), which we've used for Venice, but they feature places in Rome and elsewhere in Italy.
It may cost extra, but consider looking for a place that includes air conditioning!
www.cross-pollinate.com is a recommended booking service that focuses on just a few cities, including Rome, Florence, and Venice.
Campo de Fiori area, but super central and was awesome!!
They have a smaller one too right next door.
http://www.vrbo.com/320914