We spent about 2.5 hours looking around the museum so the guide on tripadvisor is spot on. You can download a free app which can either be an audio guide or a written guide if you prefer. Remember headphones if you want audio.
You get to learn a lot about how tile making changes over the centuries influenced by changes in technology and art. As well as being interesting to learn there are some fantastic designs and pictures too. I have not seen a museum like it.
The museum is set in a former convent. The two church parts are quite a sight to see.
After seeing the museum we stopped for a light lunch at its cafe. Not quite warm enough to sit out in November but the outside area was lovely and inside was just fine too. The museum did not have lots of eateries nearby but I would not worry as it’s own was good. Of course it is not long on the bus to get back into work he thick of things - I think there are 3 routes that come to it.
If you don’t have time for many museums whilst in Lisbon I think that this is one to make space for in your schedule.