I can imagine how you feel Samu, its partly the emotional attachment as well as the practicalities of having the space that you are going to miss.
You absolutley must rent before you buy. We live in a tranquil area and even when we're on holiday in a hotel or a town,I am reminded how intolerent we have become of other people. In the nicest possicle way of course, but we have nobody playing loud music here or chilcdren bouncing on trampolines, or domestic conversations with windows open, or late night visitors, or cars parking under our window. etc etc
Be kind to yourselves and dont feel guilty about being fussy in your choice of apartment. Check out the neighbourhood and if needbe, go for a smaller town or village with good amenities.