We did a 10-day Med cruise in 2010 and an 11-day Med cruise in 2013 and a 12-day Baltic one in 2015. Loved all of them.
Our favourite ports on the Med cruises:
. Rome (2010) and Orvieto (2013) from Civitavecchia (there's still many more things I want to see in Rome but we loved Orvieto too so I'd go back to both);
. Vesuvius and Pompeii (2010) from Naples (this was an amazing tour - I still have much more of Pompeii to see and the trip up Vesuvius was on my bucket list although I haven't taken it off the list because I want to go again);
. Valletta (2010) and Gozo (2013) from Valletta, Malta (DH is in love with Malta and would like to visit again. I quite enjoyed it but not as much as he did, although I'd be happy to go again)
. Nice/Eze (2010) and Fort de la Revere, Eze (2013) from Villefranche (loved both - I'd like to spend more time in Nice);
. Athens (2013) from Piraeus, Greece (totally was on the bucket list, totally have not removed it because I want to go again);
. Ephesus/Miletos/Didyma (2013) from Kusadasi, Turkey (I don't think
DCL goes to Turkey any more given the issues which is a shame because it was one of the best visits to ruins we've ever been to and I wouldn't mind going back);
. Delos Island (2013) from Mykonos Town, Mykonos (I wouldn't bother to go back but we did enjoy viewing the ruins on Delos Island);
. Corte (2010) on Corsica - port was Ajaccio (I wouldn't bother to go back but we had a lovely day there and I had always wanted to at least see it - I have a major Napoloenic era interest so it was very cool to see the areas in the mountains where he lived while fighting for Corsican independence as a young man);
. Florence (2010) from La Spezia; Pisa (2013) from La Spezia (I'd go back to Florence and would see the statue of David again in a heartbeat; enjoyed Pisa and climbing the tower, but no need to revisit);
. Tunis (2010) (it was a very interesting tour but there was definite tension in the air and I know that DCL doesn't go there any longer).
Actually, I think that covers all of the ports we visited. Every one was worth the visit; some I've seen and done and have no interest in revisiting but others I'd like to do again. The main drawbacks of a Med cruise are that many of the ports are quite a distance from the main points of interest so it not only eats into your time but you have to be up very early in the morning in order to get there and back in a day and still see something of interest.
The other drawback was the temperatures. The 2010 Med cruise was early September with temperatures ranging 30-32 degrees Celsius. The 2013 Med cruise was in mid-June and the temperatures in Turkey hit 42 degrees C. It didn't get much cooler than about 38 degrees in most places. However, both times it was clear skies and no rain.
We had a verandah. The best time sitting out on it was on the 2013 cruise where we sailed through the Straits of Messina between Sicily and Calabria on the mainland (between Scylla and Charybdis, aka between a rock and a hard place aka between the devil and the deep blue sea). It was in the middle of the day and we sat on the balcony with binoculars and were able to see people quite clearly in Sicily. Probably sat there for a couple of hours just watching. You're very close to shore so the views are just great.
We also really loved the Baltic cruise. The ports are much closer so the travel time is much less significant, sometimes quite short with the exception of Berlin from Warnemunde (train was 2 hours there and 2 hours back) but there are places to see closer to the port. The views coming back through the Stockholm archipelago - wow. We probably could have spent the time on our balcony, but we were on deck for nearly the entire voyage leaving Stockholm until we cleared it because we were with friends. Had my binoculars then too. St. Petersburg was amazing. Not a place that I'd want to stay but visiting on a cruise ship works for me. I still want to do it again. I had my heart set on going to the Hermitage (yes, also on the bucket list) which we did two times (ship was there overnight) as well as a few other things. I tried to downplay my expectations for the Hermitage in case I'd overblown it in my mind having wanted to visit since I was 16. It blew me away - so much more than I expected. So, no, it's not yet off the bucket list because I must go again.
Temperatures (this was early to mid July) were 22-26 degrees Celsius. Very moderate, sunny, no rain except for a drizzly day in Berlin. Very comfortable for touring. A little chilly on deck even during the day especially when moving. But DCL puts blankets out on the chairs so we sat out on deck quite a bit with blankets over our shoulders (well, I did - I'm convinced DH has no temperature receptors on his skin). Coldest location was Helsinki, warmest was St. Petersburg.
I'm trying to get DH to agree to a Norway cruise next year. He wants to do the British Isles but not the shorter one that they're offering in summer 2018 (he wants a 10-12 day one which I agree with) so I might be able to convince him to do Norway/Iceland first since we need to use our placeholder before end of 2018.