We had a very good experience at Maria Teresa's flat. Maria Teresa shows herself available full time, also replied very fast to the messages and our few requests. She also gave us information and tips about general utilities in Rome, very useful.
Concerning the flat: we recommend this flat for a couple (our experience) or a person in a business trip. The flat is very quiet and calm (no external noise), perfect to rest. Placed at about 20min from the train station and 5 min from the Coliseum. The flat is full furnished, charming and cozy. I specially appreciated the view from the small balcony, which goes to a Romantic yard in between the buildings. There are no regrets in booking this flat.
A tip for the travelers: take a coffee at the singular kiosk in the park, near its entrance, which is very close to the flat. Your mind fly away there. There is a very nice view from the Coliseum from this park.
Maria Terersa: obrigado!