When you guys start deciding about where to put your generators, you need to take into account "maintenance". We have an Onan generator in our Class C. It is installed in a compartment (side) that is just big enough to hold it. In order to do any work on it, we have to roll back our mattress and unscrew the top of the compartment, then remove the generator case. This is an improvement over the situation when we first had when we bought the RV. THEN you pulled the generator out of the compartment to do anything. But here is the real irritating thing. In order to remove the spark plug on the rare occasion that it does an incredibly uncommon thing like... oh say FOULS from crappy gasoline (not that any of us have ever gotten bad gasoline)... You have to pull the whole generator out of the compartment because Onan decided that it would be a good design to place the spark plug in a very inaccessible spot. I hate Onan.
If you would like to know what I am talking about look here on the 17th page (pg 30 in manual) you are looking for the spark plug access... on the bottom edge of the generator... http://docs.google.com/viewer?a=v&q=...0UrZ-lbHpdFAlw