Monoprix at CNIT in La Defense is a rather nice store, I called in here to get some iced teas…read moreduring their ongoing 2+1 offer to take back to my hotel, it works out incredible value at 3 1L bottles for €3.30, to put that into perspective when I was in a rush and bought a single 500ml bottle from "Paul" which was inside the Westfield Les 4 Temps mall opposite, they charged €3.10, so for an extra €0.2 I was able to get a wider selection of flavours and 2.5 litres of drink extra - that's a winner for me.
The staff did seem a little unhelpful and rude, the latter was mainly the security staff.
A really useful location if you are staying at the nearby Hilton and want to pick up essentials, they also have a decent selection of clothes and other miscellaneous items and a Cafe on another floor.
The store overall was nice, it was modern and in most cases, it was good value too, that's what I associate most with Monoprix. 4*