The Cost of a Room - London and North Western Railway - Hotel Tariff 1880s

I recently purchased this lovely little item from ebay, and have, after much judicious research (okay - 5 minutes on the internet), worked out that it is from the 1880s. What I found particularly amusing, and I have yet to fully understand, are the 'sitting room' charges, which were 'according to position.' Perhaps facing a window cost more? Also, what constitutes a 'plain' breakfast? I'm guessing just bread and tea.