Just returned from a Viking River cruise from Passau to Budapest. Overall a wonderful trip. We were in a cabin on the main deck. Very nice cabin with plenty of hanging space and drawer/cabinet space. You don't spend a lot of time in your room and many times you are docked next to another ship so we didn't miss having a balcony window. The half window was fine. Had an issue with a flooded bathroom (pump was broken) first night but the crew worked on it immediately and we had no problems after that. Great coffee machine on upper deck with all types of coffee such as café au lait, macchiato, cappuccino, hot chocolate etc. There were flavorings to add to the coffee and lots of varieties of tea. Cookies were served every afternoon. Food in the dining room was very good. Only complaint is at breakfast and lunch it was hard to get a menu or waiters to bring food not on the buffet. The chef on our cruise, Erik, was phenomenal and will do anything in his power to make your dining experience great including giving guest recipes for their favorite meals. Most meals were of the regional cuisine which was fun and flavorful. The hotel manager and activities directors were both exceptional, and the piano player sang Tom Jones tunes one evening and was wonderful. There were educational talks which were quite good and regional entertainment at night that was enjoyable. The ports were good. Passau was interesting but I could have skipped the organ concert it wasn't as good as I expected. If you get a chance have the Leberkase it is wonderful (it is also available in other stops.) The Melk Abbey Monastery was not to be missed and we had a great guide. In Durnstein I took the advise of the concierge and did not climb (as it was raining and he said it would be slippery and not much to see) but my husband along with another guest climbed to the castle ruins and said it was the highlight of his trip so I would advise if you are physically able to climb to do so. Bratislava was a disappointment as you do not go into the castle and there is not a lot to see. Vienna was wonderful but the tour does not take you inside any buildings. I was disappointed in the Symphony. The venue even though it was in the Palace was a quite ordinary room with jarring modern painting murals in orange and red on the ceiling and walls. Acoustics were good and the drummer had some amusing moments. Sailing into Budapest at night was spectacular and I was glad we started at Passau and ended here so that our first impression was the night time lights of all the gorgeous buildings on the Danube. Again the tour is mostly the exterior view of buildings except for Matthias Church. Our guide, Laslo, was the best. He sang to us and taught us a Hungarian dance which we did outside the church. Met some wonderful people and enjoyed our time.