Excellent place in front of the main trailheads in Tatry. For me the main benefit was you can head out very early morning, before the crowds. Super friendly staff, pretty good food - although you can choose from a few alternative places around if you are bored - it's open till 6pm. Breakfast was great, and the room was too.
Zakopane is easy to reach either by bus - you just need 4PLN cash for a ride, or a medium walk - 2-3km. From there you can reach transfer to other trailheads if preferred.
The aqua park pass they provide is great for recovery days.
There is a supermarket in Kuznice too but be careful as it closes at 5pm. There is a lot of shops in Zakopane, obviously though.