For a big ship, the Koningsdam offers some hidden gems where you can mingle or get away from crowds. We especially liked the Dutch cafe for a quick lunch and coffee.
Embark/debark: everything went smoothly. We caught a Rome Cab from the airport directly to the port. On arriving, we waited in a "lounge," but there were no issues.
Cabin 5110: Vista suite -- not as nice as Signature Suites on other HAL ships and not worth the extra costs above a verandah suite, save your money IMO.
Dining Room -- excellent service and wonderful food. Really HAL has improved over the years. We tried the specialty restaurant one night and it was fine also.
Dubrovnik Croatia is a small walled city is very crowded in summer months. We took a HAL small group tour “Tastes and Panoramas of Dubrovnik” that goes to a local winery and olive oil farm. On the leisurely drive we enjoyed some great scenery and the demonstrations were informative and fun. The wines were a little young, but delightful, and we purchased a red and a white to take back to the ship. There is no corkage fee in the dining room if you buy wines on a HAL tour -- yay! At the olive oil farm, we were served a wonderful lunch, and enjoyed a to die for view of the Adriatic from the proprietor's porch. Beautiful!
Split and Trojar Croatia has an old town very close to the cruise port and it is an easy walking area. The Roman emperor Diocletian built his retirement palace here and it’s a stunner. We found it well worth the extra money to do the tour the palace http://www.diocletianspalace.org. Highly recommend the private guide Ante Batarelo with PrivateGuidesCroatia.
Korcula Croatia is a lovely seaside town, with lots of very steep winding streets and small cafes along the water. No need for a tour, the town is walkable though the alleys are quite steep and narrow. The Icon Museum and Church are must sees
Kotor, Montenegro is well laid out for walking tours on your own. We took a Shore Excursions tour to Perast and Our Lady of the Rocks Church. We thoroughly enjoyed this small group tour. The ride to Perast via a 8 person van afforded us with super views of the scenery and delightful small town. The Church is beautiful. It's well preserved and has an interesting nautical history.
Koper, Slovenia old town is small and there is not too much to see. Take a taxi (don't pay for the ship's tour) to Piran and walk around the old town and visit the church on the hill. Piran has wonderful sea vistas with lots of small cafes for a lunch or coffee.
Well maintained and adequate storage space. But for the price, it's not as spacious as the Signature Suites on smaller HAL ships and it's not really worth the extra money paid beyond what you receive a standard verandah suite.