Amazing experience! Nuno is very welcoming and outstanding host. He explained everything is details and was very helpful.
The boat is 40min walk from the famous Porto bridge. Also, there is a beach nearby which is extremely good for sunset.
In the boat it was really cold, but it has good amount of blankets so you'll sleep good. But do not expect that you'll spend other time on boat, it's cold outside the bed and quite a little of space (you can stay straight inside)
Shower and toilets are outside on the Marine station (2min walk).
Even it was very cold, the experience is totally worth it.