Hi I am spanish and I live in Madrid but I lived in Barcelona.
I do not know the prices of vacational apartments rates in rest of europe.
In Barcelona you can find from about 400-1300 € per week (26400-85800 php per week) in safe and nice place. STAY AWAY from the Raval neiborhood cause is not safe at all, it´s old and horrible
For a long stay maybe you can find cheaper for sure (52000 php /month)
Hope this helps
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