I spent 3 days in Barcelona and this location was perfect for me. Super easy to walk to and from most of the attractions, and the metro is easily accessible for the further stuff like Sagrada Familia and Park Guell.
The bed was comfortable, and everything is provided in the bathroom, which is nice.
The neighborhood itself was pretty neat, and I never felt unsafe.
The ONLY thing I can recommend is bringing earplugs or something as the neighbors can be quite noisy.