This Sonder location could not be better and would be 5 stars with the exception of my first room 103. There was an immediate dank / wet smell to the property on entrance that permeated up to our 2nd floor and into our room. The room itself was nice, however the bed in 103 was so pound and creaky every time you rolled over it kept me up most of the night, combined with the dank odor and noise from the nightclub, the first night I got no sleep.
I did reach out via the Sonder app and had immediate response at 4am. He came to the room and promptly moved us at 4am. Once we got to a higher floor everything was fine. The bed was comfortably firm, great shower and lighting.
The area cannot be better. You are in the hub of Las Ramblas and a great place to find food, bars and a walk to the shopping district. You can catch the hop on hop off bus about 15 min walk away and the taxis drop is just a few feet from the entrance.
Overall had I started with the higher level room this would be a 5/5 experience. Ricardo at the front desk was excellent and very customer service oriented.
I would stay at this location because of the customer service , location and hotel accommodations. I hope they can reduce the odor at the entrance and first floors, although with the history of the building it may be just architectural.
Enjoy Barcelona