The location is fine, not just at the station, but in 30 minutes by foot you can reach the station, the city center, and the portico that leads to San Luca. There are a lot of rules on arrival, but nothing extraordinary. Of course, all the space is shared, but during my stay there were very nice people that treated each other with respect (I think, it's generally the case). The only thing is you should agree on your check-in (and check-out if you want to leave your bags) well in advance to ensure that Emilio will be there to open the door.