Our first reaction on walking into the flat was "Wow, this is so small!". But then, you realize that, while small, it works very, very well. The flat is large enough and very comfortable where it counts. That said, two people in the flat is the max you can have and still be comfortable. The flat itself was delightful. It's in a gated courtyard building that is located right under Edinburgh Castle and just a few steps up the road from Grassmarket. For exploring Edinburgh's Old Town or for going to the festival in August (which is why we were there), this location can't be beat. It's a secure space that is surprisingly peaceful given it's proximity to a lot of nighttime action. We had no troubles sleeping at all. Simon and Anna were very communicative hosts and responded quickly to any questions I had. I'm highly allergic to fragrances, so we've avoided B&Bs in general because of the tendency for B&B owners to use scented laundry products. One night in a bed with sheets washed in scented laundry detergent is enough to trigger an allergic/asthmatic reaction that can through me into bronchitis as a result- so, I'm a little hesitant to stay somewhere other than a large hotel many times. Simon and Anna were great about responding to my concerns, right down to providing me with information on the detergent they used for linens. So helpful! And, it was all fine - no lingering laundry fragrances to trigger my allergies. There are a ton of great places to eat from as early as 6 am up past midnight that are all within walking distance. If you're driving, there's no parking available at the building, but you can get overnight parking for just £15 at the Princes Exchange Car Park which is just a quarter mile up the road from the flat. We truly enjoyed our stay at Anna and Simon's flat in Edinburgh and would certainly stay there again the next time we are in Edinburgh.