From our 4 night stay in the end of September:
Excellent location for a city vacation - all the main the sightseeing and tourist attractions are just a walk away. We took 2-3 days to cover all the directions from the city center and still had enough energy to do some shopping and enjoy entertainment in the evening (different Flamenco and other shows are close by).
The staff is very kind, helpful and professional. We felt welcomed and whenever we asked something we received their full attention.
The room was clean and comfortable, AC kept it cool. Fridge and plenty of kitchen appliances are available to prepare a quick meal and nice cup of coffee. Also I have never experienced before that guests are provided with fun and useful accessories, such as an instant film camera, reusable water bottles and yoga mats, which added the finishing touch to our vacation.
The stay at Bob W's certainly adds the overall very positive imperssion of Madrid. We'll be back :)