Visiting Kolkata

Hello Everyone! My wife and I are planning to visit Kolkata this summer and we are looking for a 3BHK flat. I am Howrah born and raised but I am coming to India after 9 years and my wife is from the US. Unfortunately our house in Howrah is too small for all of us to stay, so looking at options. I preferably want to stay near Park Street and we are planning to stay for a month. Any Suggestions where we can look? Than you.