Overall we had a great stay at Caroline's apartment. The location is brilliant with the metro and supermarket being so close and it being a 20 minute stroll into the centre. The apartment itself is mostly as described apart from there is no air con in the second bedroom. Everything else amenity wise was spot on, the shower has good power (so important in hot weather), the kitchen is well equipped and the wifi works well. The views from the balcony of Sagrada Familia are breathtaking especially at sunset. The perfect spot to enjoy a glass of Sangria :)
There are a few things that put a dampener on our trip though. First was the electricity cap. When we checked in Caroline's friend explained that it was only there to stop people abusing the air con which had happened in the past however we were hardly home and used the air con as little as possible yet we were almost hitting the cap each day. For people who prefer to have the air con on whilst they are home or when they sleep, they would have exceeded the cap without a doubt. Needless to say, it was around 28 degrees everyday we were there so probably less of an issue in cooler months. Now the thing that really left us disappointed was when we got home I received a message from Caroline about a damaged wall. We left the apartment exactly as we found it and know for sure any damage that occurred wasn't due to us. I explained this to Caroline and asked for a photo but I didn't hear anything back. When I messaged again to see if she had gotten to the bottom of where this damage had come from, I received a reply basically suggesting I was lying. If I could rewind the time I would have arranged for a mutual check over of the apartment so both parties were on the same page about the condition. All things considered, I would still recommend the apartment, but would note the electricity cap, the lack of air con in the second bedroom and would suggest checking the condition of the flat together before you leave.