Dave O.
Yelp
Believe it or not, if you look for it, Rome has a lot of green space. This is a rather large park with historical relevance. Back in the day, the way back before time, Roman elites would come here to take a load off, chilax, and cool off a bit.
By the way, for those who need to get their run on, this is a good option. Many hotels do not have gyms in them with treadmills, and the city streets are way too busy and chaotic to try and run on. So, uber your way to this awesome place and enjoy.
Cheers