I have to travel to Leon quite a bit for work, and while there are many, many options in this touristy town, finding a place that offers free wifi, secured parking, AC, cable TV, and is quiet for USD$30, Sueno de Meme is a deal! It's walking distance to lots a great restaurants and just 2 blocks from a supermarket. If you're looking for someplace quiet (it's in a residential neighborhood, just a few blocks from the touristy center), the times I've stayed, there's never been a "backpacker" crowd (though I think mission groups do like to use it). Staff has always been friendly and accommodating: recently when I tried to book there, they had told me they were filled. However, a couple of days later, they called me back to let me know that a room had become available. There's a beautiful terrace with a view of the cathedral where you can catch the cool breeze and enjoy the sunset all while drinking a cold brew.