DH has some airmiles to use up. It's proving to be close to impossible to actually book anything, but we've worked out that we could fly to Madrid. There are four of us - me, DH, DS (10) and DD (8). I've never been - would this be a good choice for a half term city break? Lots to do and see? We haven't done an abroad city break with the DC, so I guess there'd be a bit of age appropriate sight-seeing, eating and mooching around. TIA.