One reason I'm familiar with this castle is because a friend of mind stayed quite close to it on a recent trip, and toured the halls of this architecturally superior structure, where the Kings of Bohemia and the Holy Roman Emperors precided.
Pachtuv Palace Prague is not the only quality hotel Prague I'm familiar with, however. In fact, an instructor of mine taught ESL classes in Prague several years ago, and she stayed at the Mamaison Hotel Riverside during her time there. Quite lofty accomodations for an instructor, but she couldn't help but brag about the atmosphere, and not to mention its reputation as being the best hotel in Prague.
One of the main reasons why I love this hotel is because it was created for everyone. Leisure or businesses travellers can enjoy this hotel, which is situated perfectly near the airport, and also near Pragues's famous cultural attractions, like Prague Castle. Not one, but both of these hotels just recently won the coveted 2013 Traveller's Award from Trip Advisor, and Mamaison Hotel Riverside Prague was voted Hotel of the Year by Czech Hotel Awards.
Travelling to Prague has been on my bucket list for years, and I hope that I will soon be able to cross it off the list.