I had a great stay at Carmen's. The room was exactly what I had expected and the house is very nice. There is people in and out but most of them are very professional and very nice and considerate. I did not have issues of noise and felt comfortable to meet the other guest. They have someone to come and clean the place twice a week which is nice. Carmen is super attentive and very responsive. I trust she cares about making her guest very comfortable. The house is located very central and close to Opera train station which was super convenient. There is also a groceries store next door and near tons of restaurants plus walking distance to Gran Via. A could of things to keep in mind, during the summer the place is warm! I had to buy an additional fan because Madrid can get hot and dry with no current of air, and the home does not have a strong circulation of air somehow, even thought there are windows. You have to bring your own toilet paper, which I found a little annoying, specially when other guest would use yours and not bring theirs. The kitchen is beautiful but some of the guest make a disastrous mess immediately after the cleaning guy cleans the house. That was sad, because Carmen does make sure the house is very well kept. But overall is very nice experience and highly recommend it.