ziyi was a fully breastfed baby so water was not necessary until she started her solids at 5 month old. i've no problem feeding her plain water at all. she's just like me, loves drinking lots of plain water. when i gave her ribena at around 15mth, she refused any flavored drink. lately (at 22mths), she started to show interest in our "drinks" whenever we eat out.
i made honey lemon drink the other day and i had to coax her to drink it. after a few small sips, she started to like the taste and she drank 1/3 of it. here my girl is enjoying her drink and making the "aaahhhhh" sound :)