In reply to The Dan with no name:
The only 'climber's bothy' (that which is in close walking proximity to any crag) is the Hutchison Memorial Hut. A cold spartan box indeed, but in a wonderful remote location. Well worth, if you have the motivation, a few nights. And very memorable afterwards.
The only 'others' are the Garbh Coire howf or under the Shelter Stone. Both these make the above seem like a hotel. Again though, amazing and very convenient locations if one is climbing in the Garbh coire or at the head of Loch Avon. Ryvoan, Bob Scott's and Corrour (to an extent) are just too remote from their nearest respective crags to be truly convenient.
At one time there was a bothy in Coire an Lochain - Jean's Hut, and the St Valery shelter - just above the Stag Rocks. Both were removed in the 1970s.
There just ain't a substitute, or better option, for being close to many places than taking your tent. And praying it's up to it!