Great sized one bedroom apartment in the heart of the city. Although its downtown, it is very quiet and dark with the windows closed for sleeping. AC was a definite must for Barcelona weather in June (90 degrees F). There were a few bugs but my guess is that's not preventable in the climate and where we were was likely much better than elsewhere.
Eduard was very helpful in the booking process and provided lots of tips. He even had bottles of wine in the apartment for guests (to buy of course). The washer/dryer worked very well. The kitchen had what we needed.
The essentials provided were sheets/towels. There wasn't shampoo/soap for the shower, so bring that yourself (we had some from a previous hotel stay, so it was no problem).
Overall, a very good stay, and I'd definitely stay here again.