The place was exactly as advertised. The location is ok, the bus is right under the corner but I walked the whole 4 days since it is quite close and Prague is not that big. The building looks renovated and the doors are new (like a hotel). The room itself but everything is convienient. The bathroom looks new and clean, the small kitchen is quite convienient too and EVERYTHING was provided to have a light breakfast (bread, coffee, sugar, butter, jam, even small coffee-cream portions). I only had to buy milk and cereals to have the perfect breakfast. The street is not noisy and the double windows makes it perfectly calm. (NB : I would have concerns about the heart if you come in the middle of hot days, but it wasn't the case.). The triple curtains for the light make good light/block in the morning. There are electric plugs everywhere to charge your different divices. Wi-fi worked OK the whole trip but it certainly really slow (forget youtube streaming). My only negative point would be the quality of the bed/matress. I know I managed to cope with it but I am sure sensitive people might find it not comfortable.
The check-in and out might be a little strict but if you are lucky and polite (and that there is no guest before/after you), Bonny will make it perfectly ok for you to come earlier/leav later. On that, I really have to thank her again.
IN CONCLUSION : for the price, this place is certainly THE BEST, CHEAPEST, MOST CONVIENIENT option for stayin in Prague, assuming you want privacy of a room and not share the place with someone (which was better because I was quite late very night).
I know that if I come again, alone, I would chose to come back here without any hesitation.