Considering the Le Meridien Ile Maurice in Port Louis?
A VT member wrote the following comment about visiting Port Louis:
Blue Penny Museum STAMPS (Mauritius) by nora_south_africa
In Port Louis at the Caudan Waterfront you will find the Blue Penny Museum which houses two of the rarest stamps in the world. The museum is run by the Commercial Bank and is chiefly dedicated to the art and history of Mauritius.