The day when our plane landed on Leonardo airport instead of Ciampino, I called Marko by phone and he gave me proper instructions how to get the closest train station. Leonardo (Pina's husband) and Marko (Pina's son) waited for us at the station. They were very kind and helpful. After they showed the neighborhood by car and showed the flat they left us with some food and drinks in the drinks. At afternoon Pina came up and after we talked about our staying plans she showed the neighborhood by walk. The apartment is very very clean and nice just as shown on the pictures. 10 minutes walk from red metro station. This district is very nice and you can watch the local Romans how they are living and you can feel yourself a little bit part of them. :) (we felt that everybody surround us knew very well we are tourists, but we doesn't know how :D) Spent 6 beautiful days at Rome what Pina and her family made more better. Never met better host before and never stayed better apartment before. You must try the local pizzeria Giardino Segredo. They are extremely friendly and remembers to you if you going at the second time!
Summarized I would recommend to everybody, from my heart to stay at Pina's apartment if you don't want to spend too much and you want to live at Rome for a short period such as Romans do. :)
We will definitely choose Pina's flat next time when visiting the lovely Rome.