Ana's place is in such a great location in Alfama, just be prepared for many hills! It's about halfway between the river and the Castle.
The flat has everything needed for your stay, comfortable bed, kitchen and bathroom kitted out with all you will need.
Tram 28 is great, it's rammed at peak times, we went early, 8 am to avoid Crowds.
If you go to Belem, take the bus, they are frequent and not nearly as busy.
We bought a one day Lisbon ticket, we went to the Jeronimos Monastery, Belem Tower, then on by train to Cascais for a wonderful evening stroll and dinner in a little restaurant called Economica, near the station.
Would definititly stay at Ana's again.