Stayed for 5 nights whilst attending a trade show at RAI. The location is great, less than 10 mins walk to Rai and tramline into town (or to RAI) just around the corner. Up on the 4th floor it may not be great if you don't like stairs but with the height comes the benefit of a nice (small) balcony - great to chill out at the end of a long day.
I really appreciated the touches Ronit thought of - fully stocked pods for the coffee machine, cutlery/crockery for takeaways (and making sandwiches in my case!).
Great shower, fast WiFi, comfy bed - no complaints from me!