England + Spain - 旅遊 Trip 是否可行

以下是我在新年時定下的旅遊行程, 希望大家比的意見:
(是否可行? 會唔會太密? 第一次europe trip, 地點可以嗎?)

Day 1 HK to London
Day2
London - afternoon arrive, hotel and site seeing in night
Day3~4
London - British museum, London eye, Windsor, Westminster, Tower Bridge,
Theatrea with "one show", River Bost trip, stonehenge
Day5 London - flight to Barcelona
Two days trip in Barcelona
Day6 Trip in Barcelona, night train to Seville
Day7 Seville - city visit
Day8 Morning train to Granada
Day9 Granada to Madrid, and Madrid will have the following siteseeing
- Museo Del Prado
- 王宮
- 太陽門
- Two out of three location: (Toledo, Segovia, Avila)
Day10
Afternoon (around3) flight back to London
And London back HK.
Day 11 arrive

希望大家可以交流下你們以前的經驗~~(最擔心係Seville, Granada and Madrid 唔夠時間)

另外, 我尚在頭痛酒店問題,
我會在 London, Barcelona, Seville, Granada, Madrid stay for night.
Do you have any suggested hotel within that?
Cheaper price is more preferable.

Please help.!!

Thanks.