The basement AF/KLM lounge in BOS is quite pitiful...dingy lighting, no window views (blocked off due to Terminal E expansion), extremely limited food selection, desserts have long gone stale, and now highly crowded due to the fact that Delta no longer has enough space at A to service all of its international flights and has moved several to E.
The worst part is that this is the lounge that Qatar J pax are supposed to use, since QR/BA don't have a lounge agreement in BOS and therefore QR J pax aren't allowed to use the much better BA lounge. In fact, the BA lounge dragons in BOS are known to deny entry to oneworld elites flying QR, even though they should have access by oneworld rules.