Berdych has linked up with the Croatian, who brought down the curtain on a 14-year professional career at the Monte Carlo Masters last April.
Ljubicic feels Berdych, whose sole appearance at Queen's came in 2005, would benefit from playing the Wimbledon warm-up event in June as he bids to land his maiden grand slam crown at SW19.
Ljubicic said: "I believe that playing the Aegon Championships is going to help Tomas this year.
"He only played Queen's once before and I thought he should change that.
"Travelling is tiring. If a player stays in London and gets used to London grass - and the Queen's Club courts are the closest to the courts at Wimbledon - it can only be a good thing. I think it's the best preparation for Wimbledon."
Berdych, who reached the Wimbledon final in 2010, agreed, adding: "I think it could be a good advantage to be in London to get used to the conditions and to those great courts, and I think this is exactly what I need before Wimbledon.
"The experience of reaching the Wimbledon final was great. It showed me a lot of things - that I'm able to play really well through two weeks, which is very tough.
"I now have experience of a grand slam final and I hope one day I can be able to profit from that.
"For instance, the year I reached the Wimbledon final I was able to profit from the grand slam semi-final I reached a couple of weeks earlier in Paris, so I hope I can use the experience of reaching the Wimbledon final to make the next step."