When are you going NPB? I think if it's peak season - summer or winter, then it is worth it. This has been debated on here many times, some of the pros are:
- location - walk is nothing at all especially shuffling through a sea of people when the park is at it's max (or waiting for a shuttle bus and being pushed/crammed in!).
- security - linked to the above, you do not have a security check to get through when you stay at the DLH (lord knows why you don't?) - so no queuing for EMH - potentially means you can be one of the first in the park if this is important to you.
- breakfast * - most comprehensive of the Disney hotels and an attraction in itself (to quote DLP Daft

). Check out the hotel threads at the top for a list of the usual fare. Sitting overlooking Main Street & the Castle starting your day is fab!
- character meets * - you do seem to get more unusual character meets at the DLH at breakfast - eg we've met the Genie, Max (Goofy's son), Chip n Dale, Tigger, Rabbit, Eeyore etc. Can't think of the others at the mo. At the other Disney hotels it seems to be the usual - Mickey/Minnie/Pluto/Goofy. This can be a boon if the parks are busy as normally character meets are quieter in the hotels.
- Cafe Fantasia * - it's a lovely place to chill in the evenings and have a (very) expensive cocktail - the piano playing adds a nice touch.
- Fastpass - yes, it's only 1 fastpass per person, per day and it's often only valid in the afternoons but when it is busy it does help.
Obviously some of these (*) are open to non residents but you can take full advantage if staying here.
I'm sure there is more that others can add. As you can tell, I love the DLH but it is often prohibitively more expensive than the other hotels unless a good offer comes along!
ETA - DLH isn't everyone's 'cup of tea' and there are a some people on here who have stayed there and prefer other Disney hotels - HNY / SL etc. It is quite subjective and a matter of preference I guess!