I will be taking DL to FCO this fall in Delta One and was wondering if anyone knows about arrivals lounges at the airport (mainly to shower before heading into the city). I don't believe that DL has any there but with different code shares and the like, I suppose anything is possible. If DL does not have such a lounge, does anyone know of one that can be accessed otherwise, such as paying for access or with some affiliation like Amex?

Just a side question. DL has two non-stops to FCO from ATL, one on the A330-300 with the old Delta One seats (I've flown it, okay IMO for an older product but not the greatest) and the other on an A350-900, which from the seat map appears to be one of the LATAM purchases with the weird old style business class seats and little privacy. I've seen reviews that say they're comfortable enough but I don't really want someone next to me and to be so open. Any opinions as to which really is the better choice?

Thanks.