The positives about the apartment. The layout is very nice, and it was well appointed (lots of IKEA). The kitchen has a good fridge, and everything needed to make a light breakfast or dinner. The washing machine worked well, and we could easily hang out clothes to dry. Checkin with Omar was very nice and communication was clear. The apartment was clean and had cleaning supplies. We loved the window and the patio! Both bedrooms had windows that opened, creating a nice breeze so we didn’t need to use the ac much. The local neighborhood was nice - there is a bar directly below, and there are good restaurants and cafes for breakfast and dinner on the streets on either end of the alley with the apartment. It was close to the Mont Juic - just a short walk gave spectacular views of the Mediterranean and the cable cars! It was also close enough to the Barcelona Sants train station to easily walk with luggage (30 minutes).
The less good. The apartment is on the 5th floor (counting the street level), with narrow unlit stairs winding their way up. The lower levels had roaches in the stairs (but, to be clear, we saw no roaches in the apartment). The bar and street could be very noisy. And the walk to the active parts of Barcelona (Las Ramblas and the old town) could take you through some parts of the Ravel that felt unsafe.
Overall, we were comfortable but may not choose again.