Hi Dondon
The place I stayed at was only 1/2 a mile away from the CTC centre - the holiday inn express southampton west. All the hotels I found were much the same price (about £45 to £50) so I went for the closest - no chance of getting caught in traffic or getting lost!
They do have several different sims, although I think they only use the 737 fixed base sim for the assessment. They walk you past all the 6-axis full motion sims just to tease you...
Good luck with it!
Ann