It's a really nice place in an awesome location. We pretty much only used the room to sleep and shower so we didn't have much contact with Marvin but he seemed like a really nice guy.
It is super easy to get to the place from the airport and back. There is an amazing arcade-bar around the one corner and a wonderful cafe for breakfast and lunch around the other. You can easily get into town on foot and even Phoenix park is not too far away.
We had a great few days here and would definitely come back!