Not sure I understand why some people complain about the walk to the parks...it's all of about 10-15 minutes through DTD or the monorail to MK is even closer--nothing compared to the schlep on the WDW buses.
I agree it's nothing like the trip from most WDW resorts to parks, but that's apples and oranges in many ways.
I'll share a story. About 3-4 years ago we were at DL in August staying in the Grand Californian. We spent the morning touring Disney California Adventure and decided to take a break...maybe swim at the hotel. This was around noon.
As we prepared to exit the park, we noticed that FastPasses for Grizzly River Run (water ride) had a return time in the 2:30 - 3:00 neighborhood. Standby was over an hour. On a whim, we grabbed a set of FPs.
We went back to the hotel for lunch and then down to the pool. When our FP return time arrived, everyone was already in swimsuits. We each tossed-on a t-shirt and some sandals, and walked straight into the park to ride GRR.
After the ride we walked back to our room to change clothes and get ready for the evening.
There is just no WDW comparison for what we did. Our total travel time from the resort pool to the attraction was under 2 minutes thanks to the side gate which happens to deposit you right next to GRR.
From Disneyland Hotel, it would have been 15+ minutes of walking each way to do the same thing.
Monorail isn't particularly reliable as a mode of transportation given the small capacity and often infrequent schedule.
I wouldn't say that the location of DLH is bad--particularly if you're used to travel times at Walt Disney World. But it's not nearly as good as GC. With respect to the theme parks, there's just no advantage to staying at DLH over GC. Unless you're a fan of Rainforest Cafe, ESPN Club or one of the restaurants at DLH, it takes longer to travel to pretty much everywhere.