Oh, I like the look of Trastevere Colors - I love that area/neighborhood - a lot; this one is somewhat further southwest, but still very manageable to sites; it looks really lovely. (If you choose this one, I will look forward to hearing about it from you).
They all look nice - not a fave of location of B&B Roma but that's just personal preference; the Home Suite Rome looks like you could get a very nice amount of space, more than the other two? And, location wise - in popular areas, not quite as "residential" as the location of the one in Trastevere but, of course, residents live in all these areas just the HSR has three places smack in the middle of three popular spots. Edit: The Piazza Navona one looks to be right on the Piazza which would give me giant pause - it is a big, busy, noisy piazza with all sorts of stuff happening pretty late into the night - but, you might like that if you have the little terrace that appears in the photo - if I am seeing that correctly.
Good options! Seems like a decision of best for the money and the needs of your family (space wise).
All good on air conditioning? I am assuming yes if you are considering them.
Edited: 11:38 am, March 08, 2013