I stayed with Albert during a long weekend where I attended a conference. He greeted me with tea and a warm croissant and I felt welcome from day one.
The apartment itself is very homely. While not particularly "tidy," it was very clean and it was very easy to feel welcome. The room I stayed in was very large and tidy, and I had all the privacy I needed during my stay. The bed was incredibly comfortable and it was very easy to get a great night's sleep.
I recommend Albert's place to anyone wanting to stay in Edinburgh for any amount of time. He's a fantastic host and a very interesting man.