This was our second visit to the US from the UK. The first time was several years ago to New York and obviously now to Boston.
Staying on the Sea Pearl was a unique experience and a fun thing to do. We were lucky enough to be there for the labour day fire works in the harbour which were spectacular. We found out about them from doing a bit of research before we came, always worth doing !
I would say that the boat is perfect for 2 if you are not used to being in a limited space for a week, I think personally we'd have found it difficult with more than that, but then we are not used to boats!
If you are visiting from another country don't fret too much as we did ( actually I did as it was a suprise for my partner ) about having transfers arranged in advance. We have always managed to arrange taxi transfers easily but Boston was a struggle and it seems you have to just get there then sort it out.
It was easy actually. We walked out of the terminal and got the free bus to the water taxi's. 2 were there when arrived.
The taxi took us straight to our boat, perfect, and with a tip cost 30 dollars.
My second bit of advice is a must if you are visiting further away places for a night out in Boston and don't fancy using the underground (T) late at night.
Download Uber on your phone. Let your credit card know in advance though as mine was stopped initially..grrr...but soon sorted by a phone call ! There are loads of Uber drivers and you can see their ratings and fares before comitting. You then just click to book. You can see how close they are on the app. Just get them to come to Pier 8. It was easy and very very cheap, probably better than the train even for 2 of us. I think the Uber to the airport on our return was about 16 dollars. You don't hand over cash it's automatically deducted from the credit card you registered with Uber. You don't have to give a tip apparently but as visitors we decided to. Still an absolute bargain though compared to what you pay for a taxi in the UK.
All in all a wonderful holiday and a unique experience, we'd do it again in a heart beat.