It is a long time since I had an outcall in Prague, as you pay OTT tourist rates for them. Not sure if it happens now, but on several occasions I was charged a "door fee" by the hotel for allowing the girl in (the Corinthia, Panorama and a couple of smaller hotels that I can't recall off-hand). On the other hand, when I was staying in a chain hotel with key-card lift, the girl managed to get straight up to my room without any issue.
I would strongly recommend that you do your research before booking an outcall. Some of the agencies are out and out tourist rip-off merchants. Some of them (like praguescort.cz) have been using the same pictures for decades. The same goes for some of the indies, who have seemingly been 25 for a long time. There was a useful website I used to find independents for outcalls, which had reviews to allow you to weed out the bad, but unfortunately like many czech escort sites it got closed down in the purge a couple of years back.
Many of the massage parlours seemingly offer outcall, at fairly reasonable rates. While you will not get FS in a massage parlour, you might be able to negotiate it with the girl on an outcall, although I suspect that if you can it won't come cheap. However, every time that I have tried arranging an outcall massage, the parlour concerned has stated that they have no-one available for outcall.