We were a group of 7 who stayed at this apartment for 3 nights. Overall, the apartment was good and suited our needs. It was clean and the location was fantastic, within walking distance to all major attractions in Madrid. The check-in process was smooth and the MIT House app is very useful for locking/unlocking doors. However, we paid €90 extra for the 7th guest and upon arrival, the sofa bed was not even set up for this guest and there were only 6 sets of towels. When requesting more towels, the host brought over some more immediately which was great, however for €90 extra, I believe the apartment should be set up for the amount of guests who are staying in the apartment. The apartment is also on the small side for 7 guests, especially since both bathrooms are ensuite with two other bedrooms. However, despite these drawbacks, the apartment suited our needs and was very clean, so I would consider staying here again, especially if we are traveling with a smaller group.