This is a tough review to write. We did not get to stay at the apartment in Gracia that we booked. 36 hours before boarding a plane from the US to Spain, we received notice from Marcello that there was a "hydraulic issue" with the apartment. He offered us another apartment near Sagrada Familia, which we declined because our top priorities were to have a terrace and be in central Gracia. We asked Marcello to cancel our reservation so that we could book another, and he refused. After hours of back and forth, he then offered an apartment with a terrace in Sant Antoni. This apartment was mostly fine, but it caused us to change many of our plans due to the relocation.
As compensation for the change, we were offered a 20 euro credit toward the tourist tax, and a 30 euro taxi voucher. We did not have to pay the tourist tax, but predictably received no taxi voucher.
Again, the apartment in Sant Antoni was fine aside from minor issues. But it was not what we reserved and felt trapped due to Marcello's refusal to cancel the reservation. Proceed with caution and if offered incentives to change, be prepared to not receive them.