The apartment is close to La Rambla (10 min walk), and close to a few metro stations (Sant Antoni, Liceu, catalunya). There are several small markets very close by where you can buy most of the basics you’ll need, and there are a couple of laundromats very close too (if you need to dry stuff). The apartment has a washing machine but no drier (there is a balcony for hang drying clothes). All the appliances work well. I tripped the circuit breaker a few times because I had too many things going at the same I guess. But it was easy to reset the breaker. Just try to avoid using microwave, stove, heater/AC at the same time for too long. Older building and wiring. All in all it was a great spot. There is a gym about 15 min walk from the apartment that will sell you a membership for a month (Aiguajoc). And Sant Antoni market is ten mins away with plenty of fresh food. It can be a bit noisy at night outside (restaurants, bars nearby, people yelling occasionally), but if you are a heavy sleeper or have a white noise app or machine it won’t be a problem.
The only slight caution I would give is that this location might not be the best for women traveling alone. El Raval is not the most pristine Barcelona neighborhood, and I wouldn’t recommend women walk alone at night in that area. I never had any safety issues at all, but I wouldn’t have wanted my sister or girlfriend to be strolling around there late at night. There are just some questionable characters hanging about at times. El Raval used to be a pretty rough neighborhood but in the last year or two, good policing has made things a lot better. There are always police patrolling the neighborhood at night. So like I said, I never had any issues, but it does bear mentioning for any single female travelers. You might feel more secure in a different neighborhood.
Final note for anyone traveling with a dog: Barcelona doesn’t have a ton of grass 😄. You’ll have to walk pretty far to find a nice grassy area for your dog to do its business or play around in. Luckily there is a sandy area right outside Esteve’s apartment where your dog can handle its business. But as far as walks and play time, it’s basically just streets and sidewalks for miles around. If you’re used to living in an urban area then it won’t be an issue for you but my dog is used to a lot of grassy areas so she wasn’t crazy about the neighborhood. But not a huge deal. You can take dogs on the metro and find pretty parks within 15 mins or so. And there is an animal urgent care literally down the street Incase of an emergency.