Having been to DLP numerous times in the hot summer months, once with extreme heat, I've always had a completely different experience with AC. Our favourite hotel has always been Hotel New York, which is currently closed. The reason we kept going back, especially in the summer, was because the AC was fantastic. Santa Fe, Cheyenne and the Sequioa Lodge in the old days only ever had ceiling fans. We loved going back to our hotel and enjoying the AC in the rooms. We also loved having a pool in the hot weather - that's where we spend our afternoons.
OP - I've never been at the Newport Bay Club (going in a couple of weeks) but it makes me wonder if there might be something wrong with the AC in your room?
Also, in all of our visits we've only experienced poor housekeeping once. Please call housekeeping or if it's really bad speak to the front desk and ask to be moved to another room because it is not normal in my experience.
Finally, please don't let this spoil your holiday. Yes, totally aware of the differences between countries, cultures, parks etc, but if you can see past those small things and see
Disneyland Park for what it is, I'm sure you'll have a great time