Jay-Z and Beyonce Cruising in Italy Between Tour Shows

Jay-Z and Beyonce know how to make good use of a day off in Italy ... with a cool summer drive followed by some R&R at a luxury resort.

The couple arrived at the CastaDiva Resort in Lake Como on Saturday ... in a vintage red convertible driven by Jay. We're told after a quick drink at the bar, the 2 hit the lake for nice boat ride and romantic aperitivo -- pretty much the Italian version of Happy Hour.

Bey and Jay are in Italy for 2 concerts from their On the Run II tour -- Friday night they rocked Milan ... and Sunday they'll be in Rome at the Stadio Olimpico.

It's been quite the European summer for the couple so far, and seems to just be getting better.