We booked with Michael & Friends in an absolute great apartment which didn't left anything to be desired. Everything was perfectly organized from the self check in to the equipment of the apartment. Also the location is a perfect base to explore the city with all it's bars, restaurants and the historic sites. We hardly needed any public transportation. But even that is located just in front of the apartment.
All in all we had a great stay here and definitely would recommend for anyone who wants to explore the city starting from the center.