I have walked past this spot many times. However, last week was the first time I went into the garden. I had a doctor's appointment on the Aventine Hill and saw the entrance after getting lost.
The garden is built on the site of an ancient Jewish cemetery. From the top of the garden you can see that it's laid out like a Menorah.
The garden is free and for this blooming season is open May 16th - June 28th. It's worth a visit.
Here's more info on the garden, directions, from Wanted In Europe.
You can see the Palatine Ruins on the left.
"I beg your pardon. I never promised you a rose garden." This a very pretty place. Smells lovely.
When I looked at these roses, the line "Think Pink!" from the film Funny Face came into my head.