I actually laugh out loud - loudly - during every single episode of this show. It's truly hilarious. I used to live in Spain, and I can tell you that (sadly) most Spanish television is not this good. I actually went into this biased against it. But the writing and acting is just so spot on. Hilarious. I't's truly a great show, nationality aside. Bravo!
At first the characters will seem annoying (as they are kinda supposed to be). Just get through the first episode and you still start to love them. I really noticed how much chemistry there was between the 2 main characters, and then I learned that they are married in real life. Their genuine like & love of each other shines through, which is an added plus.
I am now on my 2nd run through. It's fantastic for those of us who want to brush up on our Spanish. That's why I started watching it. I stayed watching because it's so funny and charming. I especially love the actor who plays the father. He just has perfect comedic timing.
One thing to note is that Spaniards often yell at each other a lot more than we do in the States, or even in other Spanish speaking countries. That's just the way they are, so don't be too turned off by the sometimes harsh communication style. Asi es Espanya.
Another thing is that you have to suspend disbelief a bit (especially around the surely million-euro apartments and houses they all seem to live in, even though they are supposedly struggling financially). You really just have to take it for what it is - lighthearted entertainment.