Two suggestions if you want to add more to your list:

ALBERGO DEL SENATO and

HOTEL DOM

Both of these are small boutique hotels in excellent locations for exploring Rome. We've stayed at ALBERGO DEL SENATO several times. Friends of ours recently stayed at and raved about HOTEL DOM, which was just written up in The NYT Travel section about two weeks ago.

Both hotels have smallish rooms, but ALBERGO DEL SENATO does offer some suites and mini-apartments. If you're interested in specific rooms, post again and I'll be happy to tell you what to look for. GOOD LUCK!