We rented two apartments of Enjoybcn while visiting Barcelona on business. The apartments was very quiet even though they are located next to a busy road. Th location of the "Miro apartments" are super sentral with a walking distanse to both Place de Catalunya and Las Ramblas.
We didn't have any big negative experiences but since this apartment is owned and operated by a company they requier you to go thru a bit of an extensive checklist and forms on their own company website before you can access the apartment - eventhough Airbnb already are providing the host with most of the information that they are requesting in their own forms. And at a point it become a bit bothersome..
Despite this we had a great stay and we did also enjoy the two indoor parkingspots that were provided to us free of charge in a garage close to the apartments.