I Really Recommend It
You want some advice? Choose well the time of year you want to go there. Depending on the time of year there will be more or less people. I chose the 2nd week of July and it was a perfect choice.
For me, it is an absolute must visit. To go by car until Covadonga, to park and to find this extremely beautiful temple in the middle of a natural park is priceless. You have to see it for yourself. The pictures and videos can only give you an idea.
We continued the visit going up to the lakes; I recommend that you do the same. Depending on the time of year you can do it by bus or car.