Complex sentence: It currently has a permanent, resident population of around 20 people, although there are many visitors in the tourist season, many staying in self-catering accommodation, in the form of several restored traditional island cottages.
Split into simpler sentences: It currently has a permanent, resident population of around 20 people, although there are many visitors in the tourist season. The Island also offers self-catering accommodation, in the form of several restored traditional Island Cottages.