I've not stayed in Gemelos 20 but I've stayed in several residential type blocks and, being privately owned, they are all furnished and equipped slightly differently. I've never been in one with a drier, probably because you hang stuff on the drying rack thing they all have in the balcony and it's dry in ten minutes! About three quarters have had front loading "normal" washing machines, the rest have had odd top loading machines. These are similar inside but you put the clothes in from the top through a door in the side of the rotating drum. I suppose they use them because they are less likely to flood the apartments. The balconies of Gemelos 20 are all south facing so you will get plenty of sun.