Rob and Eli's place was perfect for our first visit to Prague. The location is great - close to lots of restaurants and sites but not on a main tourist drag.
The apartment is spacious and very clean. Communication leading up to our stay was great with lots of helpful information and helping to book taxis from/to the airport.
A couple FYIs for future guests:
1) Rob & Eli are able to provide a cot and high chair if you have a small child
2) The apartment is on the top floor of the building. There is an elevator to get up 4-5 flights and then you have to walk up half a flight and then a spiral staircase. It wasn't a problem for us even with a toddler and a stroller but might be useful to know for some.
The only negative is my two year old son now expects to wake up every day and see a castle. :)