It was my second stay at Guido & Roberta's place, and this fact speaks for itself!
Monti is the neighborhood where I prefer to stay in Rome: conveniently located (minutes from Termini Station, within a walking distance to most of the attractions), a wonderful mix of local and tourist vibes, restaurants, bars, boutique shops, and it is safe (very important for me as a solo female traveler).
Communication with Roberta and Guido has been great: they are always available and reply to messages within minutes.
Their place is impeccably clean, with a well-organized space where everything is functioning. You can feel the hosts are constantly present and involved into operational management of the property, so it stays so well maintained.
Highly recommended!