After Mr. Slick and Dr. Alma received the mansion, the Grand Emperor also moved the Albedo cottage and garden into the front yard of the mansion since Dr. Alma expressed why she has sentimental value for it. Thankfully, the cottage is portable so it went smoothly.
Mr. Slick and Dr. Alma still have days when they stay in the cottage when they really want some quiet time away from all the household staff. They also feel awkward that they no longer live a quiet, humble life anymore.
Estella and Bianca were quite happy to move to their mansion so that there's more space for the entire family. They do feel a bit annoyed about having household staff, though.