Based on the passage below, mark the correct option.

By the end of our first two weeks in Holland, we had fallen head over heels for the country. It's a historic, visual, artistic and cultural feast that is compact and easy to get around thanks to its efficient trains, buses and bike routes.
(Adapted from: Sail Magazine, August 2018.)

Considering the previous passage, the underlined phrase 'head over heels' is closest in meaning to: