We are 2 adults 2 girls (11, 15). Heading to Europe in January. Among other places we've planned 4 nights in each of Salzburg, Vienna, Budapest and Prague. We also have 2 nights in Ljubljuana with trip to Bled.
My questions are:
1. We have one spare night in our itinerary and are interested in people's thoughts on where to spend that and do a day trip from one of these cities. (We are into castles, natural scenery, beautiful architecture.)
2. Do people think that 4 nights in one of these cities is too long (for a quick trip to Europe) and we'd be better pinching a night from one of these places and thus staying 2 nights in a quaint picturesque town between these cities?
Thanks in advance for your tips.