We enjoyed our one week stay with the apartment as our base. Check in with the key box was easy. Victoria and Carlos communicated clearly and responded quickly when we messaged. The apartment is a good size for two people. The kitchen facilities are adequate. The shower worked well. The outside terrace doesn't have any view but is a bonus if you want to use it. The apartment was quiet which we really valued. The locality isn't one of Madrid's most desirable areas, but it is very central, making it easy to get to other places (Sol is less than 10 minutes walk away). We would certainly consider using it again when we're next in Madrid.