Perhaps I am mistaken, but I don't think Ester liked me very much. She seemed a bit annoyed at my presence at times, like when I asked for hand soap for the bathroom. I also got locked out once all day with bags of groceries because the door would not open with the key and she wasn't going to around for several hours, but that is no one's fault.
The room is as described and very close to the beach. Keep in mind that it is at one far edge of Barcelona however, so maybe it is not so close to other things.
If you have any sort of environmental allergies or are sensitive or have asthma, the place is not for you. It is very hot and humid and stuffy - the aircon is only in the central room, not in the bedrooms, and it goes off at night. When i was there during the day to get ready I literally sweat so much that my showers did not matter.
I have allergies to pets but am usually fine if the animals don't go into my room - Ester was very helpful in keeping the dog out of my room, but the quarters are so small that it did not matter and the allergens got to me anyway. I ended up getting sick and having bronchitis for the rest of my trip.
This is a good stay for you if you are not looking for anything luxurious or overly comfortable -although you WILL have your own space.
Side note: if you a girl with long hair and have to take showers that are longer than a couple of minutes, there is no door to part of the shower and the water will go everywhere. She told me that the water was going down the stairs from my shower and I was very sorry, but I spent a normal amount of time using the water so I didn't know what else to do...