Female, Working Professional, Looking for Single Apartment or Shared Apartment

Hello. I am 32 years old, from the United States. I've been working full-time for the past 5 years abroad, and am now looking for a place in Leiden or the Hague. I prefer to live with people around my own age who are students or professionals. An apartment on my own is also fine if the landlord is able to accept my income comes from online at the moment.

I'm looking for a place before April 1st.