I am sure outside Dublin you would find a lot of nice green places and lots of nature.
Like in every country it will be not easy to find a job here, if you don't have anything special to offer. On the other hand Mauritius will be totally different than a holiday once you live here for good. I wonder since you are from Slovakia if you also speak Russian. Maybe this could be an advantage concerning the tourist sector. (But can't tell you how this is at the moment also affected by the overall crisis)
If you like to look for jobs and to get in contact with companies you might try myjob.mu Another website is orange.mu where you might find jobs.
French is not everywhere needed, I was lucky getting a job with my German. But this I finally got only after I got married to my mauritian wife. Before I was trying 3 month to stay in contact.
But French should be learned at one time you are staying here, since the most people speaking this.
It will not be easy to start here, all the running to the public offices is a p.i.t.a.
Greetings from Mauritius