We did not meet Marco but we were welcomed by Daniela.
The communication was good and Daniela waited for us, despite our flight's delay.
We sat, paid the city tax, she gave us a touristic map of Rome and a few tips about the transports and the grocery shopping.

Great price for a spacious and comfortable appartment, with easy access to the centre ( we took the metro).
The bed was comfortable and the kitchen easy to use, with a few items like coffee, tea, olive oil, salt and sugar.
The neighbours were quite noisy and the shower water did not stay warm for too long but this is usual in Italy.

The air conditioning is a great plus after a long day of walking in the heat and the strong sun of Rome.

I would recommend this appartment.