Hello Javierpf,
My reasoning for changing Av. Juan XXIII to residential was because the northeast end of this stretch of avenue did not connect to any other secondaries or other roads of higher classification, therefore creating a dead-ending secondary highway. After taking another look at the criteria for highway classification in this area, I can see secondary fitting the definition of this highway. How would you feel about also changing https://www.openstreetmap.org/way/557535785 and https://www.openstreetmap.org/way/1311839055 to secondary, so that the secondary network here is more complete? Thank you and looking forward to hearing from you!