Hi there, we staid at LUX belle mare in November when our daughter was 16 months. It was great - very family friendly, both pool and beach are fabulous for toddlers, our daughter loved it. It's hard to find a room that has a separate space for a child without going for a suite or interconnecting rooms (I looked into that option for other accommodations as well) but we required a room as close to the pool as possible so that we could leave the monitor on when little one was napping in the afternoon (she still has 2 hours nap every day) and my husband and I could sit pool side - was great! There wasn't a creche and the baby club started from 3 years old but that couple of hours every afternoon were our break from parenthood duties
every room has a little terrace and the one on the ground floor have a little patio so you could sit out there if you want to in the evening. Another plus of the hotel is that even if you are half board children under 3 don't pay for their meals - and they have a very good children menu.
Mauritius is lovely, and it is one of the most child friendly places I ever been too. Finally BA goes direct and it's an overnight flight both ways - there were lots of children on it and they ALL slept all the way (or almost all the way) there and back.