Marco's place is set up really nicely. It's very clean and stylish and had everything we needed for our stay. However, we were asked for our passport pictures upon arrival, which was unexpected and unsettling as no other host had asked for them before this (we had stayed in other places in Rome and Florence during our trip). We couldn't really understand why he needed them. After some googling, it did seem that this is normal for some places in Rome, but it would have been much more pleasant if we had known about this before. The center can be reached by bus or metro, and as we were only there for a night it was not too much of a hassle to get to the Pantheon area where we had dinner.
It was a good place to stay for the night before our return flight.