Looks like you've had some excellent feedback regarding the Sings in the Loft, Lynne. I've always enjoyed the times I've managed to get to those Sings, great singers & acoustics! It is a shame about no loo or bar, but worth it if you can make the trek. A nice touch having the way lit at night too!
Just wanted to make a positive comment about the Railway Sessions and MudGathers. It may be a bit of a walk, especially with instruments, but this is such a friendly pub with a great Landlady who is always so pleased to see us. She often makes sandwiches for us if there's a decent session happening and the locals are friendly too.
The MudGathers in the upstairs room are always well attended, despite clashing with so many other great events.
Good luck with your planning Lynne!