Without doubt the best place to stay in Grand Baie. The hosts (Lena and Vivek) are geniunely nice and warm people, with great great knowledge about what to do and see in the area. They also speak swedish (as well as english and french), which was great for us as norwegians.
The location is perfect, nice and quiet street, but still less than 5 minutes of walking to the beach, dive sites, restaurants etc. Nice studio appartment with kitchen and AC. The rooms are cleaned every day by the housekeeper. Free (fast) wifi.
The guesthouse can send a driver to the airport if you call them in advance, which is much cheaper than a taxi (and a very nice guy!).
We were really pleased with our stay and can definitely recommend it to anyone travelling in Mauritius.