Mercado del Rastro, metro stop La Latina (línea 5). Every Sunday in the morning, till 2 o' clock more or less; a lot of vendors leave earlier, so go around 10 to be sure to find everything.
One of the best places for Erasmus/ international students
I'm gonna share here pics, suggestions and other stuff about my Erasmus in Madrid (March- July 2017)
4 July 2017
Madrid metro is amazing.
11 lines (or maybe more) that connect every part of the city. During the day you have to wait between three and seven minutes for the metro, during the night a bit longer, but still it's a very efficient system. It runs from 6 am to 2 am, but there are buses running all day long (even if by night there's one every 45 mins/ 1 hour. There are also apps you can download with schedules, the fastest way to get to a point.
You won't be upset with Madrid public transports.