EXCELLENT location. You are a 20 minute walk at most from almost everything you want to see and a taxi station and metro station are a bloc away. There is a massive grocery store and retail mall a block away as well. And restaurants are EVERYWHERE. Literally just outside your door and pretty much anything you would want is a short walk away.
I will note that you are in the middle of a city and that you will hear the subway rumble by, but I'm a light sleeper and it didn't bother me.
Also note that there wasn't a lot of cooking spices and dish towels and such.
We had an issue with something and they were very responsive in taking care of us.
All in all a great place to stay if you want to explore Barcelona.