My friends and I had a great time staying with Vincent while in Prague. One of the reasons that make the city great is that nearly everything is accessible by walking. Vincente place is in a perfect position to do so. The appartment is only a 3 min walk to old town square where you can do practically anything.
We did not get to meet Vincent in person but whenever we needed questions answered all we had to do was send him a message and he returned with great advice.
There is a ton of useful information provided as well when you arrive and it gave us some great ideas for things to do. Suggested routes, good places to eat and the like.
I would definitely recommend staying here for anyone looking to experience Prague and be comfortable when they are done for the day.