Would highly recommend Aleksandre's apartment if you are a solo or duo traveler. I found the room a perfect size and the bathroom and toilet in clean conditions. You only pay slightly more than a hostel and get the privacy of your own room. You can mingle with others staying in the apartment or choose to do your own thing. It's in a great location to all things within the city but Prague isn't so big that you can't access everything by foot. I would stay here again.