We spent 3 months in Jorge's apartment with our 1 year old daughter.
Let's start saying that the position is perfect: at a walking distance from Plaza de Catalunya and Passeig de Gracia, 1 block away from the Gran Via, but at the same time in a quite and nice residencial area with no turists. The faboulus Sant Antoni market is very close. There are also a lot of restaurants, bars and supermarkets in the area. The metro station Urgell and a lot of busses allow you to easily reach every corner of the city.
The apartment is extremly bright, newly furnished and well organized. The kitchen is small, but well equiped: We were able to cook two times a day every kind of delicatessen. The living room is big and confortable. There is a small balcony if you need to smoke a sigaret (but no more). The bedroom has no window, but it is not a problem in the summer, because, beeing at the 4th floor, it is possible to leave the living room windows open even at night and let fresh air coming in. It may be a problem in winter though.
Jorge is a nice person and he was always available when we had some trouble. He is not the quickest in answering to messages, so I suggest to call him if you need an imediate answer.
When we arrived the aprtment was not perfectly clean, but we raised the issue with Jorge and I think he fixed the problem talking to the cleaning lady. He also let us buy a vacuum cleaner given that we had a small child with us.
There was no child bed and chair and we brought our own.