My freind and I booked 2 rooms at the Ariva Guesthouse over the internet from Berlin. We had no idea about the demographics of Prague, but we needed a place to stay. We avrrived late, around 7pm after getting lost in the City. One of the owners greeted us on the stairs. He was the most solemn, unfreindly, unhelpful person I have ever met as the owner of a guesthouse. He insisted that we both pay for our room up front, which we did. He took our money, said to us "You are in room 3, and you are in room 6", and walked off up the stairs. That was the last we saw of any resemblance of staff working in the guesthouse. The rooms were disgustingly dirty. The mould and damp in the shower recess was so bad, I tried to find one of the owners to complain, bu they were nowhere to be seen, and did not respond to the doorbell. I had to clean it myself before I felt I could shower in it, it was that bad. The toilet was so dirty, I just refused to use it. The towels were the size of a handkerchief, and they smelled like they had not been washed for months. The beds were hard, and did not seem clean. there was a single sheet on the mattess, and a very ratty quilt as a covering. I would never recommend this place to my worst enemy as a place to stay. My advice, drive on straight past it.