Ondrej's place was great and I'd recommend it to anyone visiting Prague. It's location is perfect for walking everywhere. The bed was comfortable, the bathroom was modern and the kitchen was well-equipped. It's pretty small - more than 2 people would be tight. The roof deck was locked so we didn't get a chance to see it. Ondrej was a responsive host and he had lots of directions and guidance handy to make sure our stay was smooth.