I have found Sharesight great, but also have other investments beyond shares.
I am keen to do a better job of using Sharesight, or put the non-share related stuff into Xero which I am starting out with, full of trepidation.
One idea is to put all the cash into Xero, and just the bonds into Sharesight. But many of the bonds are either Inflation linked, indexed annuity bonds, or Floating rate bonds. My Bond Broker provides an overview service for Bonds only, but it is limited and in any case offline at the moment after a data breach.
I really like to have a single window, but it its too hard to maintain, it is of limited value.