We did this tour in late August, 2018. We are reasonably fit early 70 year olds from California. Neither of us had been on a bicycle in years. We loved it. Some observations:
-Probably the best, unique thing was the route. We were given a little GPS thing that told us where to go, turn by turn. It didn't just go from A to B. It took us through charming town centers, on farm roads through the polders, along rivers and canals, by windmills, through North Sea dunes, through tiny villages and suburbs. Even through an industrial park (think bulb and flower industries).
-The hotels ranged from very charming to just fine, and all were within a stroll of the heart of town.
-The bicycles were top notch, like new, lovingly maintained.
-The distances were just right. At the end of each day, we felt exercised but hardly exhausted, and deeply appreciated a cold beer.
-The weather was good. Pleasantly warm, some sun and some overcast. It started to rain just once, and around the next bend was an appealing hotel with a good lunch.
-We liked Peter-the-bike-guy very much. He has a stringy tour de France look, speaks excellent Euro-English, gave us clear, concise instruction on how to do things, and was amusing. Also, he was quite gracious when we told him about the bike falling into the canal.
-If we were doing the trip again (or knew beforehand what we know now), we would have made one change. We would have arranged to stay two nights in Gouda and Delft, and would have arrived a day earlier in Utrecht (we did stay an extra day in Leiden). This would have allowed us to spend time with the museums and other charms of these wonderful cities.
-Finally, we loved being immersed in Dutch bike culture. Everybody bikes, bikes are everywhere, isolated bike lanes go most places, cars respect bike rights, and oh-by-the-way people looked conspicuously leaner than in the rest of Europe, let alone in America.