My feedback:
1)Some images don't belong to the destinations, see for example: Tsilivi from Greece
2)Add reviews / comments - in this way you'll have new content on your site (good for seo)
3)Create unique title, meta title and meta description for each destination
<meta name="description" content="">
<meta name="keywords" content="">
Right now I'm looking to Capri, Italy, but the search engines don't know it because the title is DESTIGOGO and there's no meta data.This is very important for SEO.
4) If after a week your website traffic is still growing, you should consider an investment in mobile apps.
Good luck!