The Lounge at BOS is not a great venue, it was clearly rigged up with a very tight budget and it's definitely the poorest lounge in BOS. Very few power sockets (though there are some). But one huge merit is that the lounge is likely to be very close to the TAP departure gate, so it wins on location. I wouldn't plan on arriving too early, and to use The Lounge rather than trying to work around the other terminals.