We stayed for a long weekend in Rommana's apartment. It is very well located, just a few minutes walk from the de facto center, the Wenzels Plaza.
When we arrived, the cleaning staff was still going over the place, but they did their job well and fast, so it didn't bother us.
What bothered us a Little were our neighbours, some 18 around Kids from England, who couldn't stop partying for the whole night. I texted Romana about the issue and she said she would handle the situation. We also went up to the neighbours and told them to be more considerate. I don't know what the decisive factor was, but we could sleep in the remaining night, which was a relief.

By the way, the apartment wasn't that nice furnitured like on the Pictures. Our bathroom door had been kicked in and the door handle wasn't working as well. It looked like some party guests (like our neighbours) were having too much to drink and kicked the door in for fun. I don't know if that happened with the guests before us, but a repair would be nice, as well as some plants, to match the Pictures.
Overall we had a good stay in the apartment. Prague is a beatiful and exciting city, you should definately see.
If you are looking for a spot were you can relax, you should probably pick another apartment (maybe we just had bad luck with the neighbours, but all singns indicate that they often have guests, who come to city to party). For young people who go out to Party, it is perfect.