selfcatering in rome

[barbapapa]

anyone have any recommendations? Travelling by train with two dd's (then almost 5 and 7)so we need somewhere that sleeps 4 - pref not sharing a room. Also (prob asking too much for a city ) a garden if poss. Has to be within easy reach of sights and the main train station.
Will be late August.
Anyone got any ideas?
TIA

We stayed here www.navonagallerysuites.com/ with ds when he was 3.5 and it was great. When we stayed we had a shared room but I see they have expanded and have a family apartment. We were there in Dec and they were very flexible, we were able to pick the key up early on the arrival day and leave when we felt like it on departure as it wasn't booked for the next day. Great location and quality furniture & fittings.

...and it's on a direct bus route from the main station..