Room
As on the picture, clean, well-equipped (kitchen with cooker, refrigerator, hairdryer, airconditioning, television, free wifi just to mention the most important ones). In our case the bathroom opened from our room which is great, drawback of that was that it is a little bit small. For the other rooms (where it is placed outside the room and can closed by your private key) I think it is bigger.
Location
Pro is that it is very close to the downtown, cons is the condition of Via Ostiense, it is littery.
Neighbourhood
Supermarket is very close, restaurants, burger king is close. I would like to highlight the Estrobar restaurant in Via Pellegrino Matteucci where you can eat 4 courses for 27 euros. The food is amazing, incredible, heaven. It is a must to try it if you stay here, that could be your best gastronomic experience in your lifetime.
There is a laundry as well if you need so.
Hosts
It is managed by the employees of Andreotti which is Marco's bakery. They are quite friendly and helpful even with their low level of English knowledge. In the Andreotti you can have a breakfast (Cappucino or Coffee / Croissant or Cake) which is delicious if you like these. Coffee is great, there is ice cream as well which is also great. Worth to mention that you are staying at Marco's place, the staff will be even more friendlier. ;)
Marco
We did not meet personally with Marco however he wrote us some messages before the trip and give us clear direction and information about the apartment which is great.