They may not be as rowdy as Led Zeppelin at the Riot Hyatt hotel, but lawyers still cause more trouble than a hotel manager might expect.

Two recent cases in point:

In the days leading up to the trial pitting Mattel Inc. against Bratz maker MGA Entertainment Inc., attorneys for the latter firm asked the Riverside hotel where they were staying to refuse bookings to opposing counsel. They were worried documents would get delivered to the wrong rooms, so the hotel granted the request and Mattel lawyers had to sleep elsewhere.

Meanwhile, the Westin Bonaventure Hotel filed suit against Phil Spector and his trial team, alleging the famed music producer skipped out on a $100,000 bill for luxury suites and a “litigation war room” used during his six-month murder trial.

But don’t expect hotels to ban attorneys anytime soon. They’re a lucrative customer base, especially in downtown Los Angeles, where attorneys need accommodations when they’re trying cases in federal or state court there.

In fact, they get special services at several downtown establishments, including Omni Los Angeles Hotel.

“We have created what we call a war room, which has been outfitted with all their needs: shelving for files, audio and visual equipment, desks that are set up to take depositions,” said Chaya Donne, director of sales and marketing for the Omni.

In addition to suites and war rooms, downtown hotels offer trial lawyers catered lunches, shuttles to courthouses and even special spa packages.

Local litigators said having a second office set up at a nearby hotel beats trudging back to their offices.

“Trial is stressful enough,” said Elisabeth Moriarty, an entertainment attorney at Century City-based Greenberg Glusker Fields Claman & Machtinger LLP. “So, it’s very convenient to be able to miss rush-hour traffic and go back to the hotel and take a few hours to prepare for the next day.”

During four months in 2007, Moriarty and a team of Greenberg Glusker lawyers used a local hotel’s war room when they represented author Clive Cussler in his battle with producers of the movie adaptation of “Sahara.”

Even lawyers with offices in downtown sometimes prefer staying at hotels: They don’t have to worry about commutes and office distractions.

The Omni typically houses six to 10 trial teams per month, and 7 percent of their hotel room business comes from lawyers.

With that many teams, what do managers do when opposing parties try to book the same hotel?

Donne said the Omni has a first-come, first-served rule, and offers the trial team that reserves its rooms first the option of preventing opposing counsel from staying at the hotel.

Hilton Checkers, another downtown hotel, usually houses at least one team of lawyers trying a case every couple of months, said Eric Gasser, director of sales for the hotel.

But bookings cancel as often as they’re made. Cases settle or trials are postponed.

“The challenge is that it is a high-risk program,” Gasser said. “I can have six teams scheduled to start within the same week, and then not have anything.”