We were very keen to do an 8 day, 7 night cruise with Eco Ventura Eric or Letty, but sadly it looks like they may be sold out for the dates we are after (late April 2018) and due to work commitments we are locked into that time frame.
What other companies are similar ie; small (20 or under passengers), small guide to traveller ratio, similar environmental credentials.
Thanks so much for your advise.