How many rooms and beds?

[mightymads]

In TWIS Holmes says, 

“My room at The Cedars is a double-bedded one”

Then, a few pages later, 

“Mrs. St. Clair has most kindly put two rooms at my disposal,” 

Dear me, Watson, your obvious is showing. Either you forgot to edit the former statement or you left it that way deliberately for your perceptive readers. Then again, Mrs. St. Clair could have given Holmes a double room suite with a bed in each room, but that would’ve been superfluous, right? Since Holmes had intended to be there alone and met Watson at the den after the arrangements had been made.

 

It seems that the Granada adaptation went with a room with two beds scenario, with Holmes sitting on one bed and Watson going to sleep in the other:

However, which room Watson left before coming to Holmes’s room? The towel suggests that it was either bathroom OR that second room intended for him:



Another amusing point: since Watson hadn’t planned to spend the night not at home, he obviously didn’t have anything with him. It was Holmes who had packed the carpet bag. He must have taken for himself his nightshirt, his dressing-gown, etc. He couldn’t have predicted meeting Watson at the den—Watson ended up there by mere chance and accepted Holmes’s invitation. Therefore, Watson is wearing Holmes’s nightshirt.