Considering the Almenar Las Rozas Hotel Madrid in Madrid?
A VT member wrote the following comment about visiting Madrid:
Stamp and coin Market by Carmela71
At Sunday mornings at Plaza Mayor you can find this market, here you can see people changing, buying and selling, mainly stamps and coins, but also magic cards, and any kind of collection you can imagine.
This and the rastro on Sundays are something on my memories of Madrid since I was a child!