We've stayed in Aldo's apartment for 3 nights in May. We were 3 adults and 1 child and we all loved our stay at his apartment.
It's spacious, clean and well equipped. Location wise it's a 5 minutes walk from the Trevi fountain and close to all other Rome landmarks. There is also an underground parking lot very close.
Aldo has been a perfect host. He made us feel welcome in his apartment and was always available if need be. He gave us lots of tips to make the most out of our short stay in Rome.