Communication, cleanliness, luggage storage prior to check-in, and location was great. The Barcelona travel guide in the apartment, helped us finalize each day's touring.
The couch/sofa furniture sitting height was very low. My spouse had difficulty getting up once seated. Operating instructions for the washer/dryer unit would have been useful. I found the operating manual online.
Unfortunately the building elevator was not working our last evening and the morning of our departure.