Getting Between Stops
Prague to Karlovy Vary is about an hour and 45 minutes by car or around two hours by direct bus. Karlovy Vary to Český Krumlov takes about three hours by car. Český Krumlov to Mikulov is about two and a half to three hours. Mikulov to Vienna International Airport takes about an hour.
No car is needed in Prague, where cobblestones and hills make driving more trouble than help. Collect the rental on the morning you leave. If you would rather not drive, door-to-door shuttle companies link Prague, Český Krumlov and Vienna. Private transfers can cover the other legs. Within South Moravia, local trains link Břeclav, Valtice and Mikulov, though service is not frequent.
One-way rentals from Prague to Vienna Airport cross a border and usually carry a fee, so compare it with returning the car in Brno and booking a transfer. Czech motorways require a vignette, which rental cars usually include; confirm at pickup.
Where to Stay
In Prague, The Augustine sits partly in a working monastery in Malá Strana. The Aria Hotel is a music-themed boutique beside a Baroque garden. The Mandarin Oriental occupies a former monastery a few lanes away. The Four Seasons Hotel Prague faces the castle across the river from the Old Town bank.
In Karlovy Vary, Grandhotel Pupp has hosted royalty and celebrities for well over a century. Many spa hotels along the Teplá offer packages with treatments, so check what is included.
In Český Krumlov, Hotel Růže occupies a former Jesuit college above the river, with its best rooms looking across the rooftops to the castle. Small guesthouses in old townhouses have beamed ceilings and thick stone walls. Ask for a castle or river view.
In South Moravia, Mikulov has the widest choice, from boutique hotels in restored townhouses to guesthouses run by wine families. Valtice and Lednice are quieter and closer to the bike routes.
When to Go
May, June and September are the best months for the whole route. Prague's beer gardens fill every evening, Karlovy Vary's gardens bloom, Český Krumlov's castle runs its full tour program and the Moravian vineyards are green or ripening. Book well ahead for these months.
September and early October are the highlight in South Moravia. The grape harvest is underway, villages hold festivals and stalls sell burčák, a cloudy, partly fermented young wine available only for a few weeks.
July and August are warm and busy. Prague's midday crowds can be overwhelming and Moravian afternoons can reach the 90s Fahrenheit, though canoeing in Český Krumlov is at its best. The Karlovy Vary International Film Festival, held around early summer, fills the spa town and raises prices.
From November to March, Moravian palaces mostly close, many cellars open only by appointment and Český Krumlov's castle interiors shut. Prague and Karlovy Vary work in winter, with Christmas markets and thermal pools.
Budget and Booking
This is one of the best-value honeymoons in Europe. Plan on roughly $150–700 a night for two, with Prague's luxury hotels at the top, Karlovy Vary's spa hotels in the middle and Moravian guesthouses at the bottom. Luxury in Prague costs noticeably less than in Vienna or Paris. All prices are approximate and rise in summer, December and during the film festival.
Book in this order: Prague hotels, Český Krumlov rooms with a castle view, then spa treatments in Karlovy Vary and castle tours in Krumlov, especially English-language slots and the Baroque theater. Arrange Moravian cellar visits through your hotel in advance, since many producers welcome guests only by appointment.
Always pay in koruna rather than dollars on card machines and change money only at banks or reputable offices. Carry cash for small wineries and village festivals. Many wineries can pack bottles for travel; check what your airline and US Customs allow before you buy.
Practical Tips for Couples
Pack shoes with good grip for steep cobbled lanes and castle stairs in Prague and Český Krumlov, plus the hillside walks in Karlovy Vary. Bring a light jacket even in summer, because evenings by the river cool quickly. Wheeled bags are noisy work on cobblestones, so pack light if you can.
In Prague, keep phones and wallets zipped on the Charles Bridge, on crowded trams and around the Astronomical Clock. Use ride apps rather than street taxis.
Never drink and drive. The Czech limit is zero, so in South Moravia hire a driver for a day, join a guided wine tour or stay within walking distance of the cellars. Pack sun protection for summer bike rides, since shade is limited between villages.
Dress codes are relaxed. One smarter outfit each covers the opera in Prague and a grand-hotel dinner in Karlovy Vary. Mention your honeymoon when booking; small hotels often respond with a bottle of wine or a better view.
Make It Shorter or Longer
With eight days, skip Karlovy Vary. Spend three nights in Prague, two in Český Krumlov and two in South Moravia, then fly home from Vienna.
With 13 days, add two nights in Vienna at the end for palaces, opera and coffeehouses, since the airport sits on the way into the city. Or add Bohemian Switzerland for two nights after Prague, a landscape of sandstone gorges and rock arches about an hour and 45 minutes north.
With 15 days or more, continue from Vienna to Budapest by train in about two and a half hours for thermal baths and the Parliament lit gold across the Danube.
Keep two nights in Český Krumlov whatever you trim. Day-trippers see the town at its busiest. Overnight guests get the empty lanes, the lit castle and the bridges at dawn.
