Budapest and Vienna are two cities that are very different and have a strong feel. However, the historical ties that have united these places and that led to cultural influences, artistic, architectural and culinary are similar.
To get to know these two capitals you need to explore these elements of continuity and maybe add as a variant something special to the typical city break. Thus you can take advantage of the proposed Mahart Pass ship which in fine weather organizes river cruises on the Danube.
It is possible to exploit this possibility from April to September. The journey time is approximately 6 hours and takes place in the morning, twice a week each way (from Vienna to Budapest and from Budapest to Vienna). In this way, perhaps in 7 days it is also possible to combine the two views, creating a wider cultural path. The prices are € 99 from Budapest to Vienna and € 109 for Vienna to Budapest. There are also discounts for children.
Unfortunately I have not been able to personally try this experience, but I think it’s a wonderful opportunity but not extremely low-cost. However it certainly allows to rediscover the slow pace of river navigation, enjoying unusual landscape perspectives in unfamiliar territories.