Is there a space for a generator?
No, i always had to set it out back of the trailer or behind the trailer. You can put a Generator on the tongue of the trailer while traveling.
Is there a 3 compartment sink?
Yes, Three compartment sink and a hand sink
How long is the vent hood?
Is the small hatch near the front of the trailer on the outside for the generator?
No, it has a flat top in that space.
What are the sizes of the fresh water tank and the grey tank?
80 fresh , two gray 120 each
Is there a fire suppression system?
Yes, but it is not hooked up have all the parts