I was just in Bratislava at the new Kempinski Hotel River Park.
Prior to this visit, I had only spent a few hours in the city so I missed out on quite a bit (had I known of the cool marzipan shop/museum in the old town i probably wouldīve gone back just for that).
The Kempinski is a great hotel - I wrote up a review with lots of photos and itīs available
online here.
In the meantime, this might be helpful as an intro to the city:
Whatīs Doing in Bratislava