We received a recommendation to visit this restaurant and after checking out some photo's on here first we popped in. Initially, I was a bit unsure as it was on the groundfloor of a hostel building, but this should not pit anyone off!
We were fortunate to get the last table in what is a nicely decorated place. Our party included 3 adults and 2 fairly picky kids but we ordered lots of foods and were all well fed for about 1M VND. The rice rolls were amazing; both beef and vegetarian but my favourite thing was the lime and mint slushy which was delicious.
The service was very efficient and the waitress incredibly polite and friendly. Very pleased we visited. The drinks were so good we went back the next day : )

Visited October 2015

Rich M , from Hong Kong Region, China
http://www.tripadvisor.com/ShowUserReviews-g293924-d7341016-r320915265-Cai_Mam_Restaurant-Hanoi.html#