some support in Roma (Rome)

Dear Internations Roma!
Me and my friend Marie are on our spontaneous trip in Italy...We did not enforce organization part too much and now would like to ask for some help in Rom :)
We have arrived yesterday and stay until Tueday evening. By and large, we appreciate any company for a coffee or sightseeings, as well as "couchsurfing" and accommodation tips. We did not see much of ROm yet but alreadu LOVE IT! Grazzie mille, Marie & Katja