Romana's place was amazing to stay at. Check in was super easy and the location of the apartment is AMAZING. We didn't have to take public transport any of the 3 days that we were there. The main plaza is a 7 minute walk and the river is a 10 minute walk in the other direction. The place was clean and plenty of keys were provided to accommodate for the large group we were staying with. It wasn't really an issue but it would've been nice to know that the apartment was actually two apartments on the same floor (it was no bother at all, just a surprise). The kitchen had plenty of utensils with an electric kettle, microwave, oven, huge fridge. An iron and an ironing board were also provided. Everything was amazing.
All in all, I would definitely stay at Romana's place again next time I'm in Prague with so many people! :D