Well it's something different and that's what we were looking for.
Communication and check in etc was fantastic, no problems at all.
Even the directions received from the airport for train, metro etc were spot on.
We were met on arrival by Silvia and shown the boat. I was worried about how secure the boat would be but you go through a secure gate that you need a card to access through. The boat also has a padlock on it.
The boat is what you expect, you can't make a huge meal on the boat but we just bought our own cold tapas and sitting outside was just great.
The only downfall was the shower block, this was getting renovated so we were in port cabins. The males was cold , no where to hang clothes and the shower heads had no fixing, one in the females had fixings ! However on Tues when we left the new one's were open and they were everything you need ( No hairdryers still though ).
If it's something different and you don't need luxuries then this is it.