It's a really lovely building, everything was pretty much great, and Mike is a very friendly and helpful host :)
We arrived late in the evening, but because of the lock box and clear instructions, we had no problem checking in. The shared kitchen is really well organised and has pretty much everything you might need, including a filter coffee machine and everything that goes with that to make coffee, which is a big plus in my book ;) The room we were in was good, with everything there (including a world to UK plug, very convenient, as we only had one :)).
A small downside was having to wait for a while to be able to go to the toilet in the morning, because someone was taking a shower. But that's the unfortunate reality of shared bathrooms everywhere I guess.
It's about a 30 min walk to the old town, but that also makes the general area a bit quieter :) The house itself is at a pretty busy road, although this wasn't an issue for us, and our room was at the front of the house. There are also a lot of busses that can get you to the old town in 10 mins. The bus stop is literally right in front of the house. It's also not too far from Arthur's Seat, which we could see from our room :)