For future or potential guests at La Perla Asturiana -

I reserved online with a confirmation via email from La Perla Asturiana within the 24-48 time frame mentioned. The location is great, one can see Plaza Mayor around the corner of the Hostal. Safety was not an issue although I did not venture out very late. The one night I was out past 1am, I had friends walk me to the hostal where they waited until I was buzzed into the building (the front door was locked).

I was there 4 nights and only one morning did the water pressure seem weak in the shower.
The staff was friendly and one 1 of the 3 did speak English with a British accent.

There were no lifts/elevators so be prepared to lug your personal belongings up at least one flight of stairs. Also, earplugs might be a good idea for light sleepers.