This apartment is the perfect base to explore Barcelona day and night for two people! It's 10-20 minute walks from everything and very close to the metro.
We had zero issues with the apartment, communication was great and the check in and out process was very easy. It has all the amenities you may need for a short or longer stay.
You are on a busy street, in the middle of it all which we loved!! But I would recommend bringing ear plugs if you are a light sleeper.