The apartment was great and Romana was very helpful.
Although there is no stand-up shower, do not be dissuaded by this! In the modern bathroom, there is a very good hand shower and large bathtub with an integrated seat that work quite well together for seated bathing.
There is no free parking within walking distance. After dropping off our bags, I parked our car using free street parking in a location mapped for us by Romana about 10km outside the city center and left it there for our three day stay. The ride back from the car to the apartment was very easy on the metro/tube and cost a mere 30 crowns paid by credit card at a machine on the way into the metro with directions provided by G maps. Don't bother with the relatively expensive paid parking options, which you will have to reserve in advance. Go with the free option - it was incredibly easy.