Extremely friendly and helpful owner. Was there to explain everything you need to know from the start.
Authentic historic but very well preserved building, hidden from main street traffic, but easily accessible by green metro (Rakoczi Ter is some 4-5 minutes walk), blue metro (Corvin, 8-9 minutes walk), or by trams 4 and 6 (right in front of the building).
Location was great, we had a Penny supermarket, a DM shop and restaurants and coffee shops all around. The historic sights were all easily reachable with public transport. Probably walking distance for those not afraid of a little hike, but not for us since we were visiting in December and it was a bit cold.
The room was cozy, the bed was big and comfortable, we were left with a lot of clean towels and a hair dryer, we enjoyed a nice clean bathroom with a shower, hot water was never an issue, we had a well equipped kitchen at our disposal (stove-top, microwave, coffee machine, cups, silverware, plates...) and we were also happy with the heating (really important because of our time of visit).
I would highly recommend it to anybody looking to visit Budapest and the surrounding area.