We had a great stay at the Red apartment. The location is excellent to explore the city (we didn’t need to take the metro once, except to come from the airport). The flat is nicely decorated and cosy.
Communication with Luis and Teresa was excellent and efficient.
You should bear in mind these are flats in an old building, so soundproofing is not as good as in newly built houses - you might hear the occasional noise from you neighbours upstairs or in the staircase. Apart from that, the location is quiet (you don’t hear the street although it is rather busy). We recommend!