We stayed at the Johan apartment which had everything it advertised and is exactly like the pictures plus a local crowd based cafe downstairs (serves beer, of course).
You're about 2 minutes walk from the Charles Bridge and taxi/uber can come right to the front door. I didn't take much public trans but I assume that's close as well.
Because of your location above the Cafe. Leave your window closed while you are out during the day because the smell of cigarettes will drift your way. At night, they close early so it won't be an issue to let in cool air.
Would recommend for anyone and will most certainly be returning.