Just realized I never posted a review for my three-week stay back in March. The bottom line is that I liked the hotel a lot. FWIW, it was a revenue stay and my SPG status was Gold at the time. I found a reasonable rate for a junior suite for most of my stay, and the hotel upgraded me to one for the few nights not covered by that. At my request, the front desk placed me in the last room (suite) on the hallway on an upper floor facing the park for most of my stay - except for two or three nights at the start, when due to availability constraints I was in a lower floor junior suite facing the avenue.

(I believe there is even a slightly larger suite, but it had some drawback to it that I can't exactly recall...perhaps that none of those suites faced the park.)

I'd definitely recommend that upper floor, end of hallway location facing the park, in that the view is nice and the room very quiet. But even when facing the avenue, the street noise did not seem bad.

The junior suite itself was perfect for me, given how much work I had to do in the room. Like the design of the hotel itself, it's not the most charming Luxury Collection room around by any means. But the two separate rooms were quite functional and roomy. Bathroom was also nice, though a bit of a problem with water running out of the shower onto the bathroom floor if I was in the shower too long. Several times I had to spread towels on the floor to mop it up.

Service was by and large great, especially at the front desk and for room service, which was quite fast. Room service food was pretty good.

I also liked the location, within walking distance of good restaurants and cafes in several directions. The river, with some restaurants along it and a pleasant path to stroll along, was perhaps a 25-minute walk away. For those who have not been there before, the center of Belgrade is pretty easy and pleasant for walking around.

Back to the business aspect: The hotel is located right near a taxi company. Whenever I needed a cab, someone manning the front doors would call and the taxi would be there within a few minutes. Taxi fares quite cheap there, I might add.

A few minor drawbacks, though these are mostly minor quibbles:

1. Breakfast buffet was pretty weak and limited in terms of fruits and vegetables, plus some of the lousiest bacon and tiniest juice glasses I've ever seen.
2. Internet connection was a bit spotty, though usually good.
3. This hotel seems to be very big with tourist groups - not that the tourists (I believe mainly from Israel and Turkey while I was there) were bad or troublesome, but they did make for a more hectic scene at times.

All in all, then, I'd highly recommend the hotel for both business or tourists and would not hesitate to go back there.