You don't mention your dates or what size unit you're looking at, but if you find a week available on Skyauction (especially the Ready Set Go auctions) for your dates you may still want to consider that. The RSG auctions typically go for around $50 more or less, then add the fees ($210 currently) bringing your total to about $260. Even if you only stayed for 4 nights, it would run you about $65 per night, which includes tax. Not bad, especially if you're able to get a 2 bdrm. for that. Anyway, my understanding is that even if you get a full week on Skyauction, you don't have to use all 7 nights...
Good Luck!