We really had a good time staying at Lisa's place! The room is lovely (beautiful vintage furniture) and Lisa made us feel very welcome.
The city centre is within walking distance (if you're not that much into working, you could also catch a bus) and so are all the other great sights of Edinburgh. Also they have a pretty cool bookshelf with a great selection of english and german books :)
So we enjoyed our stay at Lisa's and would definitely come back!