Upgrade to Hotel Tonight same-day deals lets you book multiple nights

Four taps on your smart phone could get you a last-minute deal on a hotel room.

That’s all it takes, Hotel Tonight estimates, to book one of its same-day hotel offers, currently available only on an iPhone, iPad or iTouch. Upgrades to the free mobile app that kicked in Monday mean more cities to choose from and the ability to add extra nights to a same-day find.

For those unfamiliar with Hotel Tonight, the app lists three same-day deals a day in selected cities starting at noon local time. The deals are available until 2 a.m. With the upgrades, travelers can snag low rates for up to five nights instead of just one when making a reservation.

For example, Hotel Tonight was showing a rate of $125 plus tax at the Hotel Nikko San Francisco for Monday night and beyond, compared with $139 per night plus tax, which was the lowest rate for Monday through Wednesday that I could find at the hotel’s website.

“This was the most requested feature by Hotel Tonight users and extends the app’s reach to a broader group of people, such as last-minute business travelers who need a multi-night stay or couples seeking a spontaneous weekend getaway,” the company said in a statement.

In addition, Miami and Seattle join the list of cities that already included Boston, Chicago, Los Angeles, New York, San Francisco and Washington, D.C.

Dallas, Philadelphia and Atlanta are next to be added, the statement said.

And you can score a $25 credit for signing up (and more for signing up friends). For more about how Hotel Tonight works, check out this L.A. Times Web Buzz column and Hotel Tonight’s website.