Hotel Eslava is one of the best places to stay in Pamplona, IMHO. I stay there every time I do the
Camino Frances. It is clean, cheap, and well run by a very friendly family. While on the western edge of the old city, it is a a hidden jewel. The included breakfast is excellent. The hotel is just off (maybe 150 meters) the marked Camino route, just before it departs the ancient part of the city at the green ring that surrounds "old Pamplona."
At the intersection where you turn right to go to the hotel, instead of proceeding straight to exit Pamplona to the West, via the new section of the city, is St. Lorenzo Church. This is named for St Lawrence (Lorenzo in Spanish), who was broiled (grilled on a barbie) alive for his faith. His is the legendary story that has him, seemingly unaffected by the horrible death being visited upon him, telling his tormentors to turn him over as he was not yet done on the other side.
See the "official" Catholic story here:
http://www.catholic.org/saints/saint.php?saint_id=366
Inside the church, above the altar, there is a remarkable larger than life-size statue of San Lorenzo, robed, holding a palm frond in one arm and what appear to be a grill in the other. My first time there, I invited a woman I encountered earlier that day as we were both checking into Hotel Eslava, to attend the Mass. She was entranced by the several gold and silver statues, but could not comprehend that statue above the crucifix atop the altar.
After the Mass, she pointed up at the statue of San Lorenzo, and asked me politely what "that was all about." I explained the palm frond and the grill by telling her the short story...saints on the barbie... She was a tad less confused but at least a bit more entertained.
Also, the Chapel of San Fermin, patron of Pamplona, and the fellow for whom the bulls run, is in the Church of San Lorenzo. So, this church is a very popular tourist attraction and is worth visiting, even if not for the Catholic Mass.
Funny thing, last summer, while working as volunteer at the Pilgrim office in Santiago,, I heard several of the locals on the Rua do Vilar comment on a particularly warm and sunny day that "Lorenzo was busy today." When I asked them what they were talking about, one of them laughingly explained that "Lorenzo" was a colloquial name for the bright sun. Ah HA! Now I understood, and the dots aligned...
Final point, every night at the Hotel Eslava, you may think you are hearing legions - hoards of female cats in heat, all night. I am a cat person and it distressed me the first year. The second year, after a two-night stay, I finally asked the owner what that noise was all about, was it cats? He laughed, really hard, and said: "No, there is a zoo across the street in the green belt space. The zoo has a number of peacocks. The peacocks make the sound - all night." Okay, memo to self; the next time I plan on staying there, and there will be a next time, ask for room in the back.
I hope this helps.