Oct. 27–This weekend will mark 100 days until Super Bowl LI, and on Sunday you'll be able to read all about how it could impact Houston's economy — a subject marked by much uncertainty and debate. Today, let's tackle one piece of that: Accommodations. Will the city's hotel owners see a big bump, or even a lasting impact, from this massive two-week-long extravaganza?

One way of figuring that out is by looking at what happened the last time Houston hosted the Super Bowl, back in 2004. Of course, Houston was different back then, and so was the Super Bowl, with a bit less pomp and perhaps fewer parties. But it was still a sizable to-do. In anticipation, the city built the Hilton Americas hotel, adding 1,200 rooms all at once — creating the bump you see right before the Super Bowl in the graph below, which uses data from the hospitality analytics firm STR Global.

After that, growth in the number of hotel rooms pretty much plateaued, until it took off as the shale boom got going. Growth leveled off again, and then went into overdrive in the past two years. Another giant convention center hotel, the Marriott Marquis, will add another 1,000 rooms when it opens at the end of this year.

That doesn't tell us about hotel demand, though. To do so, we start with how many people were using those rooms. The occupancy rate in January and February of 2004 went up only slightly from a year previously, to an anemic 54.6 and 61.4 percent respectively. But that's perhaps still impressive after such a large bump in supply, and considering that business travelers avoid Super Bowl host cities before and after the big event. (Moving forward, occupancy rates seem to rise as hotel construction cools off, and sinks as more rooms come online.)

So what about profitability? What really tells you how hotels are doing is the revenue per available room, or RevPAR. Even though occupancy rates were flat, that jumped about 11 percent from the year before in January and 6 percent in February, since hotel owners hiked prices by at least 10 percent, according to Houston Chronicle reporting from after the event.

All in all, that's not a huge boost to the hotel sector's bottom line. And from the city's perspective, while the event generates a few extra tax dollars, most of that money goes to pay off the cost of building the city's sports stadiums.

Of course, the Super Bowl has more impacts than just hotels. Tune in on Sunday to find out more.