We've not cruised Princess - only Primier (now defunct), RCL & Celebrity. We've done several Med. cruises with the most recent being Millie in May 2006. (Had planned to repeat in reverse next May, but had to cancel due to health situation with my DH.)
The itinerary for that cruise was exactly what we had been looking for - BCN to Venice. Other Med. cruises had been R/T BCN.
Barcelona and Venice are two of our favorite spots in Europe and we were able to spend several days pre- and post-cruise.
We've never had a bad cruise on Celebrity or Royal Caribbean and would not hesitate to recommend either.
"Change is Inevitable: Except from vending machines!"
[b]MILLIE: The Beautiful Med...Barcelona to Venice- 5/15/05[b] NOS West. Caribbean - 12/10/2005
[b]Summit Hawaii - 4/9/2006 NOS East. Caribbean - 12/02/2006 Infinity Alaska Repo - 5/7/2007
We did a 17 day med and trans Atlantic on the Grand Princess last Nov. $4400 for a Cat AC (two people). I think that was a great rate.
SS Norway (12 times) '85 - '97; Radiance OS 06/01; Island Princess 11/04, Grand Princess 11/04/05, Golden Princess 7/21/06, Golden Princess 2/24/07, Explorer of the Seas 12/23/07, Island Princess 11/15/08