Have you considered the Affinia hotel chain,
www.affinia.com, they consistantly score well with on the Tripadvisor site.
Just randomly checking dates I see 7 nights there for a 1 bed suite from $2700-3600 range, while 2-bed suites are in the $4400-6100 range, but don't forget tax is on top of that.
The only other recommendation I would make are to consider priceline.com and hotwire.com, they are sites that sell you rooms at reasonable rates but you don't find out which hotel you are getting until you have booked (if you are interested
www.betterbidding.com gives you a good idea of rates others have gotten, plus strategies for bidding, and possible hotels). I've gotten a 4* (Millennium UN Plaza) in NY for $125 a night, a good 'funky' 3*(Hudson) for $100 a night, less than half the quoted rate both times!
Another consideration you might want to make is that 4 adults might work out better value in 2 rooms, and maybe a bit of space would be nice, over a 7 day period!
Enjoy.
