I'm not at all familiar with the hotel chain (Regent International) but noticed it is part of the frequent flyer program I'm participating in (it's possible to earn and redeem points on these hotels and get extra benefits while staying).
As it looks now I will most likely visit these two cities in the spring.

So I wonder, has anybody stayed in any of these two hotels?
The Regent Esplanade, Zagreb
The Regent Berlin

Would you recommend them? Any experiences?

Thanks