In Vietnam (and Cambodia) I found lotus scented teas mostly prepared as
pretty thin iced tea, mostly served free in street restaurants and
yayaya I liked it so much that I went shopping for those leaves. In
Saigon (tea shops) as well as in Chau Doc (market) I found a lot of
different qualities to choose from (whole/broken, amount of lotus
added, ...)
Served hot it´s not exactly my kind of tea, but iced w/o sugar IMO it
makes for a nice refreshing beverage in those insane temperatures.
Whenever I´m in SE-Asia these days I carry a 1 litre thermos with thin
iced matcha, sencha or flowered (lotus/rose) tea. Whenever I´m running
out I head for a 7/11, pay 5-10 baht for a cup of hot water, fill up my
thermos with free crunched ice (nobody ever asked me to pay for it),
steep tea of choice in hot water, pour it over the ice and enjoy.

Karsten