For the past many years we've spent two weeks (around Jan/Feb/March) in Delray Beach staying at a hotel. We both love the location and would now like a semi-snowbird situation -- say two months -- in the area. While I would love to be rich enough to do it, I can't afford to stay in a hotel for that long so we're looking for a vacation rental.
I know many places won't rent for less than 4 months but we may have another couple to share the time with us so I'll worry about that later.
I've looked at airbnb and similar websites but I'm either seeing tiny bungalows or huge houses. Plus I don't exactly feel confident of those websites. What I'm looking for is a reliable vacation home rental agency where I can deal with an actual human being and I'm hoping someone here can recommend either

• a rental agency for vacation homes on the east coast of Florida
• another good, reliable idea
• an actual rental unit

Here's my wish list for a vacation rental (I can be flexible about lots of this so it's not carved in stone)-

• east coast of Florida anywhere south of Boynton Beach
• a coastal town although the rental doesn't need to be on (or even near) the beach
• preferably a condo-type situation but not necessarily
• 1-bedroom is fine
• available January through March

I know this is a long-shot but I figure why not come to the Florida (or Florida-knowledgeable) Fodorites first.
Thanks in advance
gtg