Small, lovely 2bedroom apartment with everything you need for short and longer stays in Barceloneta, just 5mins from the beach.
I stayed for almost 2months in the summer.
The bad things first: The apartment is right next to a busy street so it's loud day & night (just bring earplugs for sleeping and you're good). I needed to sign an extra contract for the apartment outside of Airbnb a couple of days before arrival which is kinda bad and came unexpected but it happens from time to time.
The good stuff :)
Apartment was clean, it has everything you need even for longer stays, all the things that I used worked like they should: fridge, washing-machine, stove, shower, etc. no problems at all.
WiFi is great in the whole apartment, it got a table which you can use for remote work, check-in/out was no problem at all, communication was also good.
The location is probably the best in Barcelona if you like the Beach, Marina, L'Aquarium, a shopping mall, restaurants, supermarkets, nightlife, Metro-, bus-station, etc. All this is basically within 10minutes walking distance from the apartment which was perfect for me.