Want to take DD (7) away for a fun overnight stay somewhere within easy reach of London by train - if it's on a Waterloo/Clapham junction line, so much the better. Child-friendly activities a bonus but main thing we need is a pool and somewhere for a nice (7yo-friendly ie not fine dining) dinner in-house or nearby. Probably looking at £100 max for a night's B&B - hoping there might be some good 'twixmas' deals about? Thanks for any tips...