You might want to check on the the Orlando Area Hotels & Attractions forum. I'd imagine somebody on there will have some feedback (or you'll at least be able to find a thread regarding that hotel . . . . if the search feature is working.)
Just from past experience with other Comfort Suites I've stayed at, they're generally nice. Nothing fancy and the amenities aren't quite as nice as a Courtyard or Hampton Inn Suites. But for $50 it's probably a good deal if they're like all the rest. At other cities like Atlanta and Nashville I've generally paid about $65-80 a night for one.
I was actually looking at the place for awhile too along with the Courtyard at WDW. Then I decided to splurge since it will only be for one night and got my wife and I a suite at the Marriott Cypress Harbour resort. It's about twice what we were originally looking to spend, but it also has about 3 times the space plus a huge jacuzzi in the master beroom/bathroom and a nice screened in porch overlooking a golf course and lakes (plus I'm a Marriott Rewards member so I get double-points for staying here.) I was almost tempted to cancel our stay at Port Orleans and just bunk up here. But I do love staying inside WDW so we'll stay put.