The stay at Nicky's apartment was very nice. There is more than enough space for two people and you get a fully equipped kitchen. Being right in Downtown is quite cool but has the disadvantage of horrendous parking fees. Prepare to pay ~20 bucks a day for a shady parking garage.
The Chapman building has a great rooftop area where you can chill in the whirlpool or use the installed grill for a barbeque. When we used this area there were usually not many people around which was great.