I confirm La Estrellita Av Tullumayo is good place to stay if you are on motorbike. But in high peak there is dificult to find place-book in advance (on, to days before is ok).

This is how we did Machu- Pichu:
1. We arrive in Cusco and stay in La Estrellita, we buy tickets in around Plaza de armas (depeatamento de turismo cale Gartzilaso next to chocolate museum) ticekts was not avalible in internet, but in office it was no problem. Price 128sol for person.
2. We drive (early) motorbikes to Santa Teresa, its couple hours of driving. Road is amazing, beatyfull views! Last 20 km is offroad, really beatyfull views, in my opinion better then "dead road" in Bolivia.
3. We arrive in Santa Teresa 15.30 we leve bikes inside hostel Yakumama (you se it when you enter city). Price 10 sol per bike. 200 meters from hostel is bus station. At 16.00 we take bus to hydroeletrical facylity. Ticket is 5 sol.
4. We miss a train, so we decide to walk to Aqua Calientes, we are happy that we didnt take a train. Walk is really nice! Its 10 km but you go in forest ect.its safe and not hard. We used 2 hours.
5. You need to book hostel- in high peak is hard to find place in Aquas Calientes. (we use Tombo Inn hostal)
6. We wake up at 5 in morning. Eat brekfast and go to Machu Pichu. We pass a line to bus- its over 2 hours for waiting for bus!! We take stairs.
7. To get to stairs you need to go back around 1 km in Santa Teresa direction. We use 1 hour to climb the stairs, but is hard. If you dont like to get sweet better get bus.
8. Its 30 min line to enter Machu Pichu. We use 3,5 hours to visit. You need to have ticket and Pasport to enter. After that we use stairs to go down, and we walk back to Santa Teresa.

If you like to take a bus insted of stairs , my sugestion is to take it around 10.00 then is no waiting for bus, and no waiting to enter Machu. Inside is a lot of pepole anyway.. It may be even less if you go later. Hope it helps.