I stayed here recently during the CES conference and had a "meh" experience.
Let's start with the good stuff: I had a "studio suite" which consists of a large bedroom/living area that's equipped with a fridge and hot plate - handy if you plan on staying for an extended period. The rooms are beautifully appointed and I absolutely love the deep marble tubs. Plush robes and fluffy towels are a huge bonus and the beds are wonderfully comfortable.
Now on to the not so good: the room service is insanely expensive and the food I had was not good. I ordered french onion soup for lunch one day and it was totally inedible. Far too salty and served lukewarm for the INSANE total cost of $20. Breakfast wasn't good either - the only decent items we had from room service was the coffee and a fruit plate. We didn't try the restaurant here in the hotel, so I can't say if it's any good or not. It's important to point out that Trump isn't on the strip so you have to walk about 7 minutes to the nearest restaurant.
The other downer is that there's no casino at Trump, so if you're into gambling, you definitely won't want to stay here.
And finally, for the totally unacceptable: communication with the outside world while staying at the Trump is next to impossible. We learned that this is due to the fact that the building is plated in 24K gold. Luxurious perhaps, but totally stupid move - being here on business and having no cell service is simply unacceptable. And don't even try to use the land line in your room - just opening up a line costs $12, then 50 cents per minute thereafter! The wireless internet was horrendous as well. It costs $12 per day and for the most part, I couldn't even get it to work. Props to the front desk - they reimbursed me for the 3 days I had paid for. In short, it was totally impossible for me to get any work done here.
Sorry Donald, I have to say...when it comes to your Vegas hotel, you're fired.