The apartment's location is just great. It's next to the Gran Via, which makes things much easier, from here one can reach anything by foot, tonnes of bars and clubs are only a few steps away.
The apartment itself has three bedrooms, which are divided by pretty thin walls. That's why I would not recommend it to any groups with members who snore or talk at night or something similar, one can hear anything happening in the bedrooms away. It's also important that before one enters the apartment he/she should buy some basic stuff in the supermarket, which is fine, but be aware that the kitchen is totally empty. It was also pretty cold in the apartment (in October) bring warm pyjamas with you. Beside that the apartment was mostly clean. Since you find no information about where to go or what to do (see, eat, leave your luggage) I would recommend you to to check the reviews.