hey hey andrea
are you planning to stay one night in each hotel changing rooms daily? that sounds crazy to me. been to amsterdam twice and loved it. it is a busy city between people and bikes bikes bikes!! first week we stayed in an apartment on prinsengracht near amstel river, second visit was on a houseboat in the jordaan area near north church. we enjoyed both places, near public transportation. the apt had front door, 6 steps down to kitchen, that looked onto canal. all kind of private boats or tour canal boats went right by us, ducks coming near shore for their piece of bread, few steps to bridge and tram to see the beauty of it all.
any interests in an apartment or houseboat? book early, check cancellation policies, read reviews and look at pictures carefully, any mobility issues (lots of stairs/steps to climb with luggage), shared bathroom or kitchen. lots to think about.
what time do you arrive on april 27th? there will be street closures, very crowded, you may be pulling luggage through crowds and cobblestones, look at a map for of strret open and easy to get to. everyone has opinions good bad and ugly, i would love to see this kind of celebration, been to a few celebrations/festivals in europe and really enjoyed what their culture offered. have patience, eat street food, have a local drink, take pictures, once in a lifetime, we laugh till this day about fun we had at them. dutchamsterdam.nl, amsterdam.info/kingsday
i don't think it matters which month you go, end of may will be crowded with people wanted to travel before summer begins. if interested i'll send you more info about people, places, and things to do.