Probably the most up to date map with the house is the Xa-Ar book (page 24 of the PDF).
Also, that book has many texts by Elor.
My players first knew of him in that campaign, a crow to be seen at the weirdest of moments, flying away after he was discovered.
Until the party got trapped in an old magical pit, and the crow transformed and gave them some ideas on how to get out.
Eventually they found his house, and stayed there for some days. Every time he spent time with them during those days he had a slightly different personality (and accent I believe).