I'm turning 30 this November.(before Thanksgiving), and I'm looking for a weekend away with my better half. We're experienced travelers, but it'll be our first trip to Mexico (we're recently relocated to the west coast), I usually prefer the caribbean because it's historically been closer. Thus, I'm at a bit of a loss as to where to go (and asking for help).

For this trip, I'd love something classically warm, beachy and very relaxed--just want to get away for the weekend and leave my phone at home, type thing. We'll need fairly easy access to the US west coast (no sense flying 10 hours each way for a 2.5 day trip). If at all possible, I'd love to avoid the whole huge resort thing, something more like Casa Chameleon in Costa Rica (http://www.hotelcasachameleon.com)--say less than 20 rooms, decent service (but I don't need the Four Seasons), tasty (though not necessarily expensive) food either on site or down the road, and not having to worry about things like "do I have to reserve a chair at 7AM?" I think that $300/night is approximately our cap.

Everything I've seen so far is huge resorts, but I'm sure that smaller, more personal options exist. Can anyone point me in the right direction?

Thanks!