We have stayed in this accommodation twice now : that really speaks for itself. Alessandro is a great host who puts himself out to ensure that his guests have everything they need for a comfortable stay. The Garbatella location is ideal for visiting the centre of Rome but also interesting in its own right - it's where real Romans live and has plenty of good restaurants and food shops and is full of character. The apartment is well equipped and well located, being set back from the road. Watching the sun go down in the evening from the balcony is a must ( especially with a good grappa in your hand). There are always little "extras" provided by Alessandro which make you feel welcome and valued.
I can't recommend it highly enough - go there.