Ciao! Alberto, I got a friend has the same name as you:)
It’s depends on where do you work. While usually the area around Tongzilin, kehuabeilu, First Ring Road, Jiuyan qiao are idea areas for foreigners. There are a lot of bars around that area and many foreigners around.
For your preferred rent, it’s better to find yourself a flatmate, otherwise the rent will probably be higher than 150 euro if you want to find a decent flat.