We talked before about my itenerary, and I started to book my hotels (until now via booking.com). However, when I started looking for accomodation in Kyoto from 04-04-2014 until 09-04-2014 I found out that most hotels were booked out, leaving only very expensive hotels (13.000 to 14.000 Yen per night is really my maximum) or hotels with very bad or no reviews. Other sites like japanican.com and japaneseguesthouses.com resulted in practically the same... :(
There seems to be enough choice in Osaka (and some in neighboring towns like Otsu, but I don't think I want to be there). Now I'm thinking of getting a hotel near Shin-Osaka from which it takes 15 minutes to Kyoto by bullet train. Perhaps you have other suggestions or advice?